26139992 has 8 divisors (see below), whose sum is σ = 49012500. Its totient is φ = 13069992.

The previous prime is 26139989. The next prime is 26140007. The reversal of 26139992 is 29993162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1633742 + ... + 1633757.

Almost surely, 2^26139992 is an apocalyptic number.

It is an amenable number.

26139992 is a deficient number, since it is larger than the sum of its proper divisors (22872508).

26139992 is a wasteful number, since it uses less digits than its factorization.

26139992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267505 (or 3267501 counting only the distinct ones).

The product of its digits is 52488, while the sum is 41.

The square root of 26139992 is about 5112.7284301046. The cubic root of 26139992 is about 296.7803550858.

The spelling of 26139992 in words is "twenty-six million, one hundred thirty-nine thousand, nine hundred ninety-two".