20881254 has 16 divisors (see below), whose sum is σ = 42651648. Its totient is φ = 6812232.

The previous prime is 20881241. The next prime is 20881271. The reversal of 20881254 is 45218802.

It is a super-2 number, since 2×20881254² = 872053537225032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36742 + ... + 37305.

It is an arithmetic number, because the mean of its divisors is an integer number (2665728).

Almost surely, 2^20881254 is an apocalyptic number.

20881254 is an abundant number, since it is smaller than the sum of its proper divisors (21770394).

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

20881254 is a wasteful number, since it uses less digits than its factorization.

20881254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74099.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20881254 is about 4569.6010766805. The cubic root of 20881254 is about 275.3714165941.

The spelling of 20881254 in words is "twenty million, eight hundred eighty-one thousand, two hundred fifty-four".