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72883152 = 243456237
BaseRepresentation
bin1000101100000…
…01101111010000
312002010211220000
410112001233100
5122124230102
611122050000
71543332216
oct426015720
9162124800
1072883152
1138160211
12204a9900
131213ac34
149972cb6
1565ea01c
hex4581bd0

72883152 has 50 divisors (see below), whose sum is σ = 210948738. Its totient is φ = 24293952.

The previous prime is 72883147. The next prime is 72883171. The reversal of 72883152 is 25138827.

It can be written as a sum of positive squares in only one way, i.e., 63297936 + 9585216 = 7956^2 + 3096^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26823 + ... + 29414.

Almost surely, 272883152 is an apocalyptic number.

72883152 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72883152 is an abundant number, since it is smaller than the sum of its proper divisors (138065586).

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

72883152 is a wasteful number, since it uses less digits than its factorization.

72883152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56257 (or 56242 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 72883152 is about 8537.1629948127. The cubic root of 72883152 is about 417.7108108631.

It can be divided in two parts, 7288 and 3152, that added together give a triangular number (10440 = T144).

The spelling of 72883152 in words is "seventy-two million, eight hundred eighty-three thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 324 432 648 1296 56237 112474 168711 224948 337422 449896 506133 674844 899792 1012266 1349688 1518399 2024532 2699376 3036798 4049064 4555197 6073596 8098128 9110394 12147192 18220788 24294384 36441576 72883152