26431073 has 6 divisors (see below), whose sum is σ = 28077606. Its totient is φ = 24876032.

The previous prime is 26431051. The next prime is 26431079. The reversal of 26431073 is 37013462.

It can be written as a sum of positive squares in 3 ways, for example, as 6512704 + 19918369 = 2552^2 + 4463^2 .

It is not a de Polignac number, because 26431073 - 2²⁴ = 9653857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45440 + ... + 46017.

It is an arithmetic number, because the mean of its divisors is an integer number (4679601).

Almost surely, 2^26431073 is an apocalyptic number.

It is an amenable number.

26431073 is a deficient number, since it is larger than the sum of its proper divisors (1646533).

26431073 is an equidigital number, since it uses as much as digits as its factorization.

26431073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91491 (or 91474 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 26431073 is about 5141.1159294457. The cubic root of 26431073 is about 297.8778871481.

The spelling of 26431073 in words is "twenty-six million, four hundred thirty-one thousand, seventy-three".