26864690 has 16 divisors (see below), whose sum is σ = 50459328. Its totient is φ = 10278576.

The previous prime is 26864681. The next prime is 26864707. The reversal of 26864690 is 9646862.

It is a super-2 number, since 2×26864690² = 1443423137592200, which contains 22 as substring.

It is a Curzon 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, 58172 + ... + 58631.

It is an arithmetic number, because the mean of its divisors is an integer number (3153708).

Almost surely, 2^26864690 is an apocalyptic number.

26864690 is a deficient number, since it is larger than the sum of its proper divisors (23594638).

26864690 is a wasteful number, since it uses less digits than its factorization.

26864690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116833.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 26864690 is about 5183.1158582459. The cubic root of 26864690 is about 299.4980123484.

The spelling of 26864690 in words is "twenty-six million, eight hundred sixty-four thousand, six hundred ninety".