26139424 has 12 divisors (see below), whose sum is σ = 51462054. Its totient is φ = 13069696.

The previous prime is 26139413. The next prime is 26139437. The reversal of 26139424 is 42493162.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 535824 = 5060^2 + 732^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408397 + ... + 408460.

Almost surely, 2^26139424 is an apocalyptic number.

It is an amenable number.

26139424 is a deficient number, since it is larger than the sum of its proper divisors (25322630).

26139424 is an equidigital number, since it uses as much as digits as its factorization.

26139424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816867 (or 816859 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 26139424 is about 5112.6728821625. The cubic root of 26139424 is about 296.7782054746.

The spelling of 26139424 in words is "twenty-six million, one hundred thirty-nine thousand, four hundred twenty-four".