72052172 has 12 divisors (see below), whose sum is σ = 129499440. Its totient is φ = 35052336.

The previous prime is 72052151. The next prime is 72052207. The reversal of 72052172 is 27125027.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243272 + ... + 243567.

It is an arithmetic number, because the mean of its divisors is an integer number (10791620).

Almost surely, 2^72052172 is an apocalyptic number.

It is an amenable number.

72052172 is a deficient number, since it is larger than the sum of its proper divisors (57447268).

72052172 is a wasteful number, since it uses less digits than its factorization.

72052172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486880 (or 486878 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72052172 is about 8488.3550821110. The cubic root of 72052172 is about 416.1172238064.

Adding to 72052172 its reverse (27125027), we get a palindrome (99177199).

The spelling of 72052172 in words is "seventy-two million, fifty-two thousand, one hundred seventy-two".