72861056 has 32 divisors (see below), whose sum is σ = 151470000. Its totient is φ = 34845184.

The previous prime is 72861053. The next prime is 72861073. The reversal of 72861056 is 65016827.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72861053) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9431 + ... + 15318.

Almost surely, 2^72861056 is an apocalyptic number.

It is an amenable number.

72861056 is an abundant number, since it is smaller than the sum of its proper divisors (78608944).

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

72861056 is a wasteful number, since it uses less digits than its factorization.

72861056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24786 (or 24774 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 72861056 is about 8535.8687899944. The cubic root of 72861056 is about 417.6685941060.

The spelling of 72861056 in words is "seventy-two million, eight hundred sixty-one thousand, fifty-six".