20256068 has 24 divisors (see below), whose sum is σ = 40626432. Its totient is φ = 8656704.

The previous prime is 20256037. The next prime is 20256073. The reversal of 20256068 is 86065202.

It is a self number, because there is not a number n which added to its sum of digits gives 20256068.

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, 12005 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (1692768).

Almost surely, 2^20256068 is an apocalyptic number.

20256068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20256068 is an abundant number, since it is smaller than the sum of its proper divisors (20370364).

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

20256068 is a wasteful number, since it uses less digits than its factorization.

20256068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20256068 is about 4500.6741717214. The cubic root of 20256068 is about 272.5953116077.

The spelling of 20256068 in words is "twenty million, two hundred fifty-six thousand, sixty-eight".