20256612 has 48 divisors (see below), whose sum is σ = 49718592. Its totient is φ = 6410880.

The previous prime is 20256589. The next prime is 20256619. The reversal of 20256612 is 21665202.

It is not an unprimeable number, because it can be changed into a prime (20256619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18562 + ... + 19622.

It is an arithmetic number, because the mean of its divisors is an integer number (1035804).

Almost surely, 2^20256612 is an apocalyptic number.

It is an amenable number.

20256612 is an abundant number, since it is smaller than the sum of its proper divisors (29461980).

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

20256612 is a wasteful number, since it uses less digits than its factorization.

20256612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1146 counting only the distinct ones).

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

The square root of 20256612 is about 4500.7346067059. The cubic root of 20256612 is about 272.5977518728.

The spelling of 20256612 in words is "twenty million, two hundred fifty-six thousand, six hundred twelve".