138484426 has 16 divisors (see below), whose sum is σ = 228168000. Its totient is φ = 62745408.

The previous prime is 138484417. The next prime is 138484447. The reversal of 138484426 is 624484831.

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, 78351 + ... + 80098.

It is an arithmetic number, because the mean of its divisors is an integer number (14260500).

Almost surely, 2^138484426 is an apocalyptic number.

138484426 is a deficient number, since it is larger than the sum of its proper divisors (89683574).

138484426 is a wasteful number, since it uses less digits than its factorization.

138484426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158493.

The product of its digits is 147456, while the sum is 40.

The square root of 138484426 is about 11767.9406014816. The cubic root of 138484426 is about 517.3688914599.

The spelling of 138484426 in words is "one hundred thirty-eight million, four hundred eighty-four thousand, four hundred twenty-six".