26279493 has 16 divisors (see below), whose sum is σ = 36227136. Its totient is φ = 16934400.

The previous prime is 26279453. The next prime is 26279497. The reversal of 26279493 is 39497262.

It is a happy number.

It is not a de Polignac number, because 26279493 - 2¹⁸ = 26017349 is a prime.

It is a super-2 number, since 2×26279493² = 1381223504674098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26279497) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12021 + ... + 14037.

It is an arithmetic number, because the mean of its divisors is an integer number (2264196).

Almost surely, 2^26279493 is an apocalyptic number.

It is an amenable number.

26279493 is a deficient number, since it is larger than the sum of its proper divisors (9947643).

26279493 is a wasteful number, since it uses less digits than its factorization.

26279493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164.

The product of its digits is 163296, while the sum is 42.

The square root of 26279493 is about 5126.3527970673. The cubic root of 26279493 is about 297.3073601634.

The spelling of 26279493 in words is "twenty-six million, two hundred seventy-nine thousand, four hundred ninety-three".