20262864 has 40 divisors (see below), whose sum is σ = 52739680. Its totient is φ = 6703488.

The previous prime is 20262863. The next prime is 20262883. The reversal of 20262864 is 46826202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20262863) by changing a digit.

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, 5154 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1318492).

Almost surely, 2^20262864 is an apocalyptic number.

20262864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20262864 is an abundant number, since it is smaller than the sum of its proper divisors (32476816).

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

20262864 is a wasteful number, since it uses less digits than its factorization.

20262864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187 (or 3181 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20262864 is about 4501.4291064061. The cubic root of 20262864 is about 272.6257938414.

The spelling of 20262864 in words is "twenty million, two hundred sixty-two thousand, eight hundred sixty-four".