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72014880 = 2535721433
BaseRepresentation
bin1000100101011…
…01110000100000
312000111201211210
410102231300200
5121413434010
611051310120
71533054630
oct422556040
9160451753
1072014880
1137717933
122014b340
1311bc5972
1497c86c0
1564c7b20
hex44adc20

72014880 has 96 divisors (see below), whose sum is σ = 259265664. Its totient is φ = 16459776.

The previous prime is 72014879. The next prime is 72014881. The reversal of 72014880 is 8841027.

It is an interprime number because it is at equal distance from previous prime (72014879) and next prime (72014881).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×720148802 = 10372285882828800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (72014881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7357 + ... + 14076.

It is an arithmetic number, because the mean of its divisors is an integer number (2700684).

Almost surely, 272014880 is an apocalyptic number.

72014880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72014880 is an abundant number, since it is smaller than the sum of its proper divisors (187250784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72014880 is a wasteful number, since it uses less digits than its factorization.

72014880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458 (or 21450 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 72014880 is about 8486.1581413499. The cubic root of 72014880 is about 416.0454215690.

The spelling of 72014880 in words is "seventy-two million, fourteen thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 21433 42866 64299 85732 107165 128598 150031 171464 214330 257196 300062 321495 342928 428660 450093 514392 600124 642990 685856 750155 857320 900186 1028784 1200248 1285980 1500310 1714640 1800372 2057568 2250465 2400496 2571960 3000620 3429280 3600744 4500930 4800992 5143920 6001240 7201488 9001860 10287840 12002480 14402976 18003720 24004960 36007440 72014880