20412938 has 32 divisors (see below), whose sum is σ = 38344320. Its totient is φ = 7934400.

The previous prime is 20412929. The next prime is 20412949. The reversal of 20412938 is 83921402.

It is a self number, because there is not a number n which added to its sum of digits gives 20412938.

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 15 ways as a sum of consecutive naturals, for example, 9788 + ... + 11688.

It is an arithmetic number, because the mean of its divisors is an integer number (1198260).

Almost surely, 2^20412938 is an apocalyptic number.

20412938 is a deficient number, since it is larger than the sum of its proper divisors (17931382).

20412938 is a wasteful number, since it uses less digits than its factorization.

20412938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20412938 is about 4518.0679499096. The cubic root of 20412938 is about 273.2971936487.

The spelling of 20412938 in words is "twenty million, four hundred twelve thousand, nine hundred thirty-eight".