26880990 has 32 divisors (see below), whose sum is σ = 65612160. Its totient is φ = 7046304.

The previous prime is 26880989. The next prime is 26881007. The reversal of 26880990 is 9908862.

It is a congruent number.

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, 5824 + ... + 9363.

It is an arithmetic number, because the mean of its divisors is an integer number (2050380).

Almost surely, 2^26880990 is an apocalyptic number.

26880990 is an abundant number, since it is smaller than the sum of its proper divisors (38731170).

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

26880990 is a wasteful number, since it uses less digits than its factorization.

26880990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15256.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 26880990 is about 5184.6880330450. The cubic root of 26880990 is about 299.5585730149.

The spelling of 26880990 in words is "twenty-six million, eight hundred eighty thousand, nine hundred ninety".