26653431 has 16 divisors (see below), whose sum is σ = 41713664. Its totient is φ = 14818464.

The previous prime is 26653387. The next prime is 26653441. The reversal of 26653431 is 13435662.

It is not a de Polignac number, because 26653431 - 2¹⁰ = 26652407 is a prime.

It is a super-2 number, since 2×26653431² = 1420810768143522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26653441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16375 + ... + 17928.

It is an arithmetic number, because the mean of its divisors is an integer number (2607104).

Almost surely, 2^26653431 is an apocalyptic number.

26653431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26653431 is a deficient number, since it is larger than the sum of its proper divisors (15060233).

26653431 is a wasteful number, since it uses less digits than its factorization.

26653431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34350.

The product of its digits is 12960, while the sum is 30.

The square root of 26653431 is about 5162.6960979705. The cubic root of 26653431 is about 298.7108796076.

The spelling of 26653431 in words is "twenty-six million, six hundred fifty-three thousand, four hundred thirty-one".