72062172 has 72 divisors (see below), whose sum is σ = 224203616. Its totient is φ = 19004544.

The previous prime is 72062153. The next prime is 72062191. The reversal of 72062172 is 27126027.

It is an interprime number because it is at equal distance from previous prime (72062153) and next prime (72062191).

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 23 ways as a sum of consecutive naturals, for example, 7723 + ... + 14274.

Almost surely, 2^72062172 is an apocalyptic number.

It is an amenable number.

72062172 is an abundant number, since it is smaller than the sum of its proper divisors (152141444).

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

72062172 is a wasteful number, since it uses less digits than its factorization.

72062172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22027 (or 22022 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 72062172 is about 8488.9441039507. The cubic root of 72062172 is about 416.1364736528.

Adding to 72062172 its reverse (27126027), we get a palindrome (99188199).

The spelling of 72062172 in words is "seventy-two million, sixty-two thousand, one hundred seventy-two".