26502990 has 16 divisors (see below), whose sum is σ = 63607248. Its totient is φ = 7067456.

The previous prime is 26502961. The next prime is 26503031. The reversal of 26502990 is 9920562.

It is a congruent number.

It is an unprimeable number.

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, 441687 + ... + 441746.

It is an arithmetic number, because the mean of its divisors is an integer number (3975453).

Almost surely, 2^26502990 is an apocalyptic number.

26502990 is an abundant number, since it is smaller than the sum of its proper divisors (37104258).

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

26502990 is a wasteful number, since it uses less digits than its factorization.

26502990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883443.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 26502990 is about 5148.1054767749. The cubic root of 26502990 is about 298.1478104017.

The spelling of 26502990 in words is "twenty-six million, five hundred two thousand, nine hundred ninety".