72021174 has 32 divisors (see below), whose sum is σ = 148702176. Its totient is φ = 23239680.

The previous prime is 72021161. The next prime is 72021217. The reversal of 72021174 is 47112027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32634 + ... + 34770.

It is an arithmetic number, because the mean of its divisors is an integer number (4646943).

Almost surely, 2^72021174 is an apocalyptic number.

72021174 is an abundant number, since it is smaller than the sum of its proper divisors (76681002).

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

72021174 is a wasteful number, since it uses less digits than its factorization.

72021174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 72021174 is about 8486.5289724363. The cubic root of 72021174 is about 416.0575418123.

The spelling of 72021174 in words is "seventy-two million, twenty-one thousand, one hundred seventy-four".