20256862 has 4 divisors (see below), whose sum is σ = 30385296. Its totient is φ = 10128430.

The previous prime is 20256853. The next prime is 20256889. The reversal of 20256862 is 26865202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064214 + ... + 5064217.

It is an arithmetic number, because the mean of its divisors is an integer number (7596324).

Almost surely, 2^20256862 is an apocalyptic number.

20256862 is a deficient number, since it is larger than the sum of its proper divisors (10128434).

20256862 is a wasteful number, since it uses less digits than its factorization.

20256862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128433.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20256862 is about 4500.7623798641. The cubic root of 20256862 is about 272.5988733034.

The spelling of 20256862 in words is "twenty million, two hundred fifty-six thousand, eight hundred sixty-two".