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72054996 = 22313461891
BaseRepresentation
bin1000100101101…
…11100011010100
312000120202212120
410102313203110
5121421224441
611052215540
71533312606
oct422674324
9160522776
1072054996
1137744a92
122016a5b0
1311c0acc0
1497d9176
1564d4966
hex44b78d4

72054996 has 24 divisors (see below), whose sum is σ = 181061664. Its totient is φ = 22170720.

The previous prime is 72054991. The next prime is 72055001. The reversal of 72054996 is 69945027.

It is an interprime number because it is at equal distance from previous prime (72054991) and next prime (72055001).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72054991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230790 + ... + 231101.

It is an arithmetic number, because the mean of its divisors is an integer number (7544236).

Almost surely, 272054996 is an apocalyptic number.

It is an amenable number.

72054996 is an abundant number, since it is smaller than the sum of its proper divisors (109006668).

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

72054996 is a wasteful number, since it uses less digits than its factorization.

72054996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461911 (or 461909 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 72054996 is about 8488.5214260200. The cubic root of 72054996 is about 416.1226601435.

The spelling of 72054996 in words is "seventy-two million, fifty-four thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 461891 923782 1385673 1847564 2771346 5542692 6004583 12009166 18013749 24018332 36027498 72054996