20264090 has 32 divisors (see below), whose sum is σ = 45477504. Its totient is φ = 6315840.

The previous prime is 20264087. The next prime is 20264113. The reversal of 20264090 is 9046202.

20264090 = T₇₆ + T₇₇ + ... + T₄₉₅.

It is a super-3 number, since 3×20264090³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12389 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (1421172).

Almost surely, 2^20264090 is an apocalyptic number.

20264090 is an abundant number, since it is smaller than the sum of its proper divisors (25213414).

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

20264090 is a wasteful number, since it uses less digits than its factorization.

20264090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26342.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20264090 is about 4501.5652833209. The cubic root of 20264090 is about 272.6312921179.

It can be divided in two parts, 2026 and 4090, that added together give a palindrome (6116).

The spelling of 20264090 in words is "twenty million, two hundred sixty-four thousand, ninety".