20265216 has 36 divisors (see below), whose sum is σ = 53937072. Its totient is φ = 6754816.

The previous prime is 20265199. The next prime is 20265247. The reversal of 20265216 is 61256202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12426 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (1498252).

Almost surely, 2^20265216 is an apocalyptic number.

It is an amenable number.

20265216 is an abundant number, since it is smaller than the sum of its proper divisors (33671856).

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

20265216 is an equidigital number, since it uses as much as digits as its factorization.

20265216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26406 (or 26392 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20265216 is about 4501.6903491911. The cubic root of 20265216 is about 272.6363417261.

The spelling of 20265216 in words is "twenty million, two hundred sixty-five thousand, two hundred sixteen".