20923854 has 32 divisors (see below), whose sum is σ = 48615936. Its totient is φ = 5879520.

The previous prime is 20923841. The next prime is 20923879. The reversal of 20923854 is 45832902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1522 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (1519248).

Almost surely, 2^20923854 is an apocalyptic number.

20923854 is an abundant number, since it is smaller than the sum of its proper divisors (27692082).

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

20923854 is a wasteful number, since it uses less digits than its factorization.

20923854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8240.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 20923854 is about 4574.2599401433. The cubic root of 20923854 is about 275.5585518111.

The spelling of 20923854 in words is "twenty million, nine hundred twenty-three thousand, eight hundred fifty-four".