72174630 has 32 divisors (see below), whose sum is σ = 188967168. Its totient is φ = 17496800.

The previous prime is 72174629. The next prime is 72174643. The reversal of 72174630 is 3647127.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 109026 + ... + 109685.

It is an arithmetic number, because the mean of its divisors is an integer number (5905224).

Almost surely, 2^72174630 is an apocalyptic number.

72174630 is an abundant number, since it is smaller than the sum of its proper divisors (116792538).

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

72174630 is a wasteful number, since it uses less digits than its factorization.

72174630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218732.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 72174630 is about 8495.5653137387. The cubic root of 72174630 is about 416.3528310544.

The spelling of 72174630 in words is "seventy-two million, one hundred seventy-four thousand, six hundred thirty".