138769026 has 16 divisors (see below), whose sum is σ = 302768928. Its totient is φ = 42051200.

The previous prime is 138769019. The next prime is 138769039. The reversal of 138769026 is 620967831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051215 + ... + 1051346.

It is an arithmetic number, because the mean of its divisors is an integer number (18923058).

Almost surely, 2^138769026 is an apocalyptic number.

138769026 is an abundant number, since it is smaller than the sum of its proper divisors (163999902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138769026 is a wasteful number, since it uses less digits than its factorization.

138769026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102577.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 138769026 is about 11780.0265704284. The cubic root of 138769026 is about 517.7230647030.

The spelling of 138769026 in words is "one hundred thirty-eight million, seven hundred sixty-nine thousand, twenty-six".