20838051 has 12 divisors (see below), whose sum is σ = 32414928. Its totient is φ = 12823344.

The previous prime is 20838049. The next prime is 20838053. The reversal of 20838051 is 15083802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20838049) and next prime (20838053).

It is not a de Polignac number, because 20838051 - 2¹ = 20838049 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20838053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88935 + ... + 89168.

It is an arithmetic number, because the mean of its divisors is an integer number (2701244).

Almost surely, 2^20838051 is an apocalyptic number.

20838051 is a deficient number, since it is larger than the sum of its proper divisors (11576877).

20838051 is a wasteful number, since it uses less digits than its factorization.

20838051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178122 (or 178119 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 20838051 is about 4564.8714111134. The cubic root of 20838051 is about 275.1813723631.

The spelling of 20838051 in words is "twenty million, eight hundred thirty-eight thousand, fifty-one".