20472392 has 16 divisors (see below), whose sum is σ = 40055040. Its totient is φ = 9791056.

The previous prime is 20472379. The next prime is 20472421. The reversal of 20472392 is 29327402.

It is a happy number.

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, 55448 + ... + 55815.

It is an arithmetic number, because the mean of its divisors is an integer number (2503440).

Almost surely, 2^20472392 is an apocalyptic number.

It is an amenable number.

20472392 is a deficient number, since it is larger than the sum of its proper divisors (19582648).

20472392 is a wasteful number, since it uses less digits than its factorization.

20472392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111292 (or 111288 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20472392 is about 4524.6427483283. The cubic root of 20472392 is about 273.5622683738.

Adding to 20472392 its reverse (29327402), we get a palindrome (49799794).

The spelling of 20472392 in words is "twenty million, four hundred seventy-two thousand, three hundred ninety-two".