138696792 has 64 divisors (see below), whose sum is σ = 386316000. Its totient is φ = 41201664.

The previous prime is 138696791. The next prime is 138696793. The reversal of 138696792 is 297696831.

It is an interprime number because it is at equal distance from previous prime (138696791) and next prime (138696793).

It is a super-2 number, since 2×138696792² = 38473600222182528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138696791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384 + ... + 16712.

Almost surely, 2^138696792 is an apocalyptic number.

138696792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138696792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193158000).

138696792 is an abundant number, since it is smaller than the sum of its proper divisors (247619208).

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

138696792 is a wasteful number, since it uses less digits than its factorization.

138696792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380 (or 15376 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 138696792 is about 11776.9602190039. The cubic root of 138696792 is about 517.6332182878.

The spelling of 138696792 in words is "one hundred thirty-eight million, six hundred ninety-six thousand, seven hundred ninety-two".