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72083872 = 2571916937
BaseRepresentation
bin1000100101111…
…10100110100000
312000122020111001
410102332212200
5121423140442
611053001344
71533463030
oct422764640
9160566431
1072083872
1137764753
1220183254
1311c1b1a3
1498058c0
1564dd2b7
hex44be9a0

72083872 has 48 divisors (see below), whose sum is σ = 170735040. Its totient is φ = 29265408.

The previous prime is 72083857. The next prime is 72083887. The reversal of 72083872 is 27838027.

It is an interprime number because it is at equal distance from previous prime (72083857) and next prime (72083887).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4213 + ... + 12724.

It is an arithmetic number, because the mean of its divisors is an integer number (3556980).

Almost surely, 272083872 is an apocalyptic number.

It is an amenable number.

72083872 is an abundant number, since it is smaller than the sum of its proper divisors (98651168).

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

72083872 is a wasteful number, since it uses less digits than its factorization.

72083872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16973 (or 16965 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 72083872 is about 8490.2221407923. Note that the first 3 decimals coincide. The cubic root of 72083872 is about 416.1782396953.

The spelling of 72083872 in words is "seventy-two million, eighty-three thousand, eight hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 19 28 32 38 56 76 112 133 152 224 266 304 532 608 1064 2128 4256 16937 33874 67748 118559 135496 237118 270992 321803 474236 541984 643606 948472 1287212 1896944 2252621 2574424 3793888 4505242 5148848 9010484 10297696 18020968 36041936 72083872