20258955 has 12 divisors (see below), whose sum is σ = 35115600. Its totient is φ = 10804752.

The previous prime is 20258947. The next prime is 20258969. The reversal of 20258955 is 55985202.

20258955 is a `hidden beast` number, since 20 + 2 + 589 + 55 = 666.

It is not a de Polignac number, because 20258955 - 2³ = 20258947 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225055 + ... + 225144.

It is an arithmetic number, because the mean of its divisors is an integer number (2926300).

Almost surely, 2^20258955 is an apocalyptic number.

20258955 is a deficient number, since it is larger than the sum of its proper divisors (14856645).

20258955 is a wasteful number, since it uses less digits than its factorization.

20258955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450210 (or 450207 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 20258955 is about 4500.9948900215. The cubic root of 20258955 is about 272.6082615590.

The spelling of 20258955 in words is "twenty million, two hundred fifty-eight thousand, nine hundred fifty-five".