20920038 has 16 divisors (see below), whose sum is σ = 41888880. Its totient is φ = 6965216.

The previous prime is 20920033. The next prime is 20920061. The reversal of 20920038 is 83002902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20920033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5956 + ... + 8792.

It is an arithmetic number, because the mean of its divisors is an integer number (2618055).

Almost surely, 2^20920038 is an apocalyptic number.

20920038 is an abundant number, since it is smaller than the sum of its proper divisors (20968842).

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

20920038 is a wasteful number, since it uses less digits than its factorization.

20920038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20920038 is about 4573.8428044698. The cubic root of 20920038 is about 275.5417990757.

The spelling of 20920038 in words is "twenty million, nine hundred twenty thousand, thirty-eight".