26964531 has 12 divisors (see below), whose sum is σ = 42489720. Its totient is φ = 16342080.

The previous prime is 26964503. The next prime is 26964541. The reversal of 26964531 is 13546962.

It is a happy number.

26964531 is a `hidden beast` number, since 2 + 6 + 9 + 645 + 3 + 1 = 666.

It is not a de Polignac number, because 26964531 - 2⁶ = 26964467 is a prime.

It is a super-2 number, since 2×26964531² = 1454171864099922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26964541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136086 + ... + 136283.

It is an arithmetic number, because the mean of its divisors is an integer number (3540810).

Almost surely, 2^26964531 is an apocalyptic number.

26964531 is a deficient number, since it is larger than the sum of its proper divisors (15525189).

26964531 is a wasteful number, since it uses less digits than its factorization.

26964531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272386 (or 272383 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 26964531 is about 5192.7382949654. The cubic root of 26964531 is about 299.8685757673.

Subtracting from 26964531 its reverse (13546962), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 26964 and 531, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 26964531 in words is "twenty-six million, nine hundred sixty-four thousand, five hundred thirty-one".