72455628 has 24 divisors (see below), whose sum is σ = 193215232. Its totient is φ = 20701584.

The previous prime is 72455549. The next prime is 72455671. The reversal of 72455628 is 82655427.

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, 431200 + ... + 431367.

Almost surely, 2^72455628 is an apocalyptic number.

It is an amenable number.

72455628 is an abundant number, since it is smaller than the sum of its proper divisors (120759604).

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

72455628 is a wasteful number, since it uses less digits than its factorization.

72455628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862581 (or 862579 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 72455628 is about 8512.0871706063. The cubic root of 72455628 is about 416.8924611561.

The spelling of 72455628 in words is "seventy-two million, four hundred fifty-five thousand, six hundred twenty-eight".