72455156 has 24 divisors (see below), whose sum is σ = 134628480. Its totient is φ = 34001792.

The previous prime is 72455147. The next prime is 72455177. The reversal of 72455156 is 65155427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27221 + ... + 29763.

It is an arithmetic number, because the mean of its divisors is an integer number (5609520).

Almost surely, 2^72455156 is an apocalyptic number.

It is an amenable number.

72455156 is a deficient number, since it is larger than the sum of its proper divisors (62173324).

72455156 is a wasteful number, since it uses less digits than its factorization.

72455156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2981 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 72455156 is about 8512.0594452811. The cubic root of 72455156 is about 416.8915558955.

The spelling of 72455156 in words is "seventy-two million, four hundred fifty-five thousand, one hundred fifty-six".