72472422 has 32 divisors (see below), whose sum is σ = 166446720. Its totient is φ = 20805120.

The previous prime is 72472399. The next prime is 72472457. The reversal of 72472422 is 22427427.

It is a self number, because there is not a number n which added to its sum of digits gives 72472422.

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, 27643 + ... + 30150.

It is an arithmetic number, because the mean of its divisors is an integer number (5201460).

Almost surely, 2^72472422 is an apocalyptic number.

72472422 is an abundant number, since it is smaller than the sum of its proper divisors (93974298).

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

72472422 is a wasteful number, since it uses less digits than its factorization.

72472422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57828.

The product of its digits is 12544, while the sum is 30.

The square root of 72472422 is about 8513.0735930098. The cubic root of 72472422 is about 416.9246682293.

Adding to 72472422 its reverse (22427427), we get a palindrome (94899849).

It can be divided in two parts, 7247 and 2422, that added together give a palindrome (9669).

The spelling of 72472422 in words is "seventy-two million, four hundred seventy-two thousand, four hundred twenty-two".