26813690 has 16 divisors (see below), whose sum is σ = 49929480. Its totient is φ = 10355520.

The previous prime is 26813629. The next prime is 26813701. The reversal of 26813690 is 9631862.

It can be written as a sum of positive squares in 4 ways, for example, as 22458121 + 4355569 = 4739^2 + 2087^2 .

It is a super-2 number, since 2×26813690² = 1437947942832200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26813690.

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, 45941 + ... + 46520.

Almost surely, 2^26813690 is an apocalyptic number.

26813690 is a deficient number, since it is larger than the sum of its proper divisors (23115790).

26813690 is a wasteful number, since it uses less digits than its factorization.

26813690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92497.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 26813690 is about 5178.1937005099. The cubic root of 26813690 is about 299.3083696800.

The spelling of 26813690 in words is "twenty-six million, eight hundred thirteen thousand, six hundred ninety".