72472432 has 20 divisors (see below), whose sum is σ = 140560200. Its totient is φ = 36198848.

The previous prime is 72472399. The next prime is 72472457. The reversal of 72472432 is 23427427.

It is a junction number, because it is equal to n+sod(n) for n = 72472394 and 72472403.

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 3 ways as a sum of consecutive naturals, for example, 20319 + ... + 23617.

It is an arithmetic number, because the mean of its divisors is an integer number (7028010).

Almost surely, 2^72472432 is an apocalyptic number.

It is an amenable number.

72472432 is a deficient number, since it is larger than the sum of its proper divisors (68087768).

72472432 is a wasteful number, since it uses less digits than its factorization.

72472432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680 (or 4674 counting only the distinct ones).

The product of its digits is 18816, while the sum is 31.

The square root of 72472432 is about 8513.0741803417. The cubic root of 72472432 is about 416.9246874055.

Adding to 72472432 its reverse (23427427), we get a palindrome (95899859).

The spelling of 72472432 in words is "seventy-two million, four hundred seventy-two thousand, four hundred thirty-two".