20874154 has 16 divisors (see below), whose sum is σ = 36115200. Its totient is φ = 8863344.

The previous prime is 20874143. The next prime is 20874163. The reversal of 20874154 is 45147802.

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 7 ways as a sum of consecutive naturals, for example, 5314 + ... + 8365.

It is an arithmetic number, because the mean of its divisors is an integer number (2257200).

Almost surely, 2^20874154 is an apocalyptic number.

20874154 is a deficient number, since it is larger than the sum of its proper divisors (15241046).

20874154 is a wasteful number, since it uses less digits than its factorization.

20874154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13797.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 20874154 is about 4568.8241375654. The cubic root of 20874154 is about 275.3402026530.

It can be divided in two parts, 2087 and 4154, that added together give a square (6241 = 79²).

The spelling of 20874154 in words is "twenty million, eight hundred seventy-four thousand, one hundred fifty-four".