20258492 has 24 divisors (see below), whose sum is σ = 39172896. Its totient is φ = 9118208.

The previous prime is 20258477. The next prime is 20258507. The reversal of 20258492 is 29485202.

It is an interprime number because it is at equal distance from previous prime (20258477) and next prime (20258507).

It is a super-2 number, since 2×20258492² = 820812996228128, 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, 4913 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (1632204).

Almost surely, 2^20258492 is an apocalyptic number.

It is an amenable number.

20258492 is a deficient number, since it is larger than the sum of its proper divisors (18914404).

20258492 is a wasteful number, since it uses less digits than its factorization.

20258492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12997 (or 12995 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20258492 is about 4500.9434566544. The cubic root of 20258492 is about 272.6061848052.

The spelling of 20258492 in words is "twenty million, two hundred fifty-eight thousand, four hundred ninety-two".