26404631 has 8 divisors (see below), whose sum is σ = 28880400. Its totient is φ = 23941440.

The previous prime is 26404627. The next prime is 26404639. The reversal of 26404631 is 13640462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26404631 - 2² = 26404627 is a prime.

It is a super-2 number, since 2×26404631² = 1394409076492322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26404631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26404639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565 + ... + 7433.

It is an arithmetic number, because the mean of its divisors is an integer number (3610050).

Almost surely, 2^26404631 is an apocalyptic number.

26404631 is a deficient number, since it is larger than the sum of its proper divisors (2475769).

26404631 is a wasteful number, since it uses less digits than its factorization.

26404631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 26404631 is about 5138.5436652810. The cubic root of 26404631 is about 297.7785203266.

The spelling of 26404631 in words is "twenty-six million, four hundred four thousand, six hundred thirty-one".