72860445 has 32 divisors (see below), whose sum is σ = 148035840. Its totient is φ = 33307200.

The previous prime is 72860407. The next prime is 72860503. The reversal of 72860445 is 54406827.

72860445 is a `hidden beast` number, since 7 + 2 + 8 + 604 + 45 = 666.

It is not a de Polignac number, because 72860445 - 2⁹ = 72859933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37606 + ... + 39495.

It is an arithmetic number, because the mean of its divisors is an integer number (4626120).

Almost surely, 2^72860445 is an apocalyptic number.

It is an amenable number.

72860445 is an abundant number, since it is smaller than the sum of its proper divisors (75175395).

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

72860445 is a wasteful number, since it uses less digits than its factorization.

72860445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77122 (or 77116 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 72860445 is about 8535.8329997722. The cubic root of 72860445 is about 417.6674266043.

The spelling of 72860445 in words is "seventy-two million, eight hundred sixty thousand, four hundred forty-five".