20264915 has 8 divisors (see below), whose sum is σ = 26528688. Its totient is φ = 14738080.

The previous prime is 20264899. The next prime is 20264927. The reversal of 20264915 is 51946202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20264915 - 2⁴ = 20264899 is a prime.

It is a Duffinian 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, 184172 + ... + 184281.

It is an arithmetic number, because the mean of its divisors is an integer number (3316086).

Almost surely, 2^20264915 is an apocalyptic number.

20264915 is a deficient number, since it is larger than the sum of its proper divisors (6263773).

20264915 is a wasteful number, since it uses less digits than its factorization.

20264915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368469.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20264915 is about 4501.6569171806. The cubic root of 20264915 is about 272.6349918936.

The spelling of 20264915 in words is "twenty million, two hundred sixty-four thousand, nine hundred fifteen".