26640264 has 32 divisors (see below), whose sum is σ = 76115520. Its totient is φ = 7611456.

The previous prime is 26640247. The next prime is 26640277. The reversal of 26640264 is 46204662.

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, 79119 + ... + 79454.

It is an arithmetic number, because the mean of its divisors is an integer number (2378610).

Almost surely, 2^26640264 is an apocalyptic number.

26640264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26640264 is an abundant number, since it is smaller than the sum of its proper divisors (49475256).

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

26640264 is a wasteful number, since it uses less digits than its factorization.

26640264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158589 (or 158585 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 26640264 is about 5161.4207346427. The cubic root of 26640264 is about 298.6616830146.

The spelling of 26640264 in words is "twenty-six million, six hundred forty thousand, two hundred sixty-four".