72494180 has 24 divisors (see below), whose sum is σ = 166078080. Its totient is φ = 26361440.

The previous prime is 72494179. The next prime is 72494189. The reversal of 72494180 is 8149427.

It is a super-2 number, since 2×72494180² = 10510812267744800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72494180.

It is not an unprimeable number, because it can be changed into a prime (72494189) 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, 164540 + ... + 164979.

It is an arithmetic number, because the mean of its divisors is an integer number (6919920).

Almost surely, 2^72494180 is an apocalyptic number.

It is an amenable number.

72494180 is an abundant number, since it is smaller than the sum of its proper divisors (93583900).

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

72494180 is a wasteful number, since it uses less digits than its factorization.

72494180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329539 (or 329537 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 72494180 is about 8514.3514139364. The cubic root of 72494180 is about 416.9663877276.

The spelling of 72494180 in words is "seventy-two million, four hundred ninety-four thousand, one hundred eighty".