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72887037 = 394125819
BaseRepresentation
bin1000101100000…
…10101011111101
312002011001012220
410112002223331
5122124341122
611122115553
71543346436
oct426025375
9162131186
1072887037
1138163123
12204abbb9
131213c932
14997448d
1565eb25c
hex4582afd

72887037 has 8 divisors (see below), whose sum is σ = 97289760. Its totient is φ = 48537840.

The previous prime is 72887027. The next prime is 72887039. The reversal of 72887037 is 73078827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72887037 - 27 = 72886909 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72887037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72887039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10087 + ... + 15732.

It is an arithmetic number, because the mean of its divisors is an integer number (12161220).

Almost surely, 272887037 is an apocalyptic number.

It is an amenable number.

72887037 is a deficient number, since it is larger than the sum of its proper divisors (24402723).

72887037 is a wasteful number, since it uses less digits than its factorization.

72887037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26763.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 72887037 is about 8537.3905263845. The cubic root of 72887037 is about 417.7182326866.

The spelling of 72887037 in words is "seventy-two million, eight hundred eighty-seven thousand, thirty-seven".

Divisors: 1 3 941 2823 25819 77457 24295679 72887037