20264215 has 8 divisors (see below), whose sum is σ = 24404688. Its totient is φ = 16152960.

The previous prime is 20264207. The next prime is 20264227. The reversal of 20264215 is 51246202.

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

It is not a de Polignac number, because 20264215 - 2³ = 20264207 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 5746 + ... + 8575.

It is an arithmetic number, because the mean of its divisors is an integer number (3050586).

Almost surely, 2^20264215 is an apocalyptic number.

20264215 is a deficient number, since it is larger than the sum of its proper divisors (4140473).

20264215 is a wasteful number, since it uses less digits than its factorization.

20264215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14609.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20264215 is about 4501.5791673589. The cubic root of 20264215 is about 272.6318526964.

It can be divided in two parts, 2026 and 4215, that added together give a square (6241 = 79²).

The spelling of 20264215 in words is "twenty million, two hundred sixty-four thousand, two hundred fifteen".