26431245 has 16 divisors (see below), whose sum is σ = 46989120. Its totient is φ = 14096592.

The previous prime is 26431231. The next prime is 26431253. The reversal of 26431245 is 54213462.

26431245 is a `hidden beast` number, since 2 + 643 + 12 + 4 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-26431245 is a prime.

It is a super-2 number, since 2×26431245² = 1397221424500050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 97759 + ... + 98028.

It is an arithmetic number, because the mean of its divisors is an integer number (2936820).

Almost surely, 2^26431245 is an apocalyptic number.

It is an amenable number.

26431245 is a deficient number, since it is larger than the sum of its proper divisors (20557875).

26431245 is a wasteful number, since it uses less digits than its factorization.

26431245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195801 (or 195795 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 26431245 is about 5141.1326573042. The cubic root of 26431245 is about 297.8785332927.

The spelling of 26431245 in words is "twenty-six million, four hundred thirty-one thousand, two hundred forty-five".