138269080 has 64 divisors (see below), whose sum is σ = 335174400. Its totient is φ = 51166080.

The previous prime is 138269069. The next prime is 138269107. The reversal of 138269080 is 80962831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30565 + ... + 34795.

It is an arithmetic number, because the mean of its divisors is an integer number (5237100).

Almost surely, 2^138269080 is an apocalyptic number.

138269080 is a gapful number since it is divisible by the number (10) 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 138269080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167587200).

138269080 is an abundant number, since it is smaller than the sum of its proper divisors (196905320).

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

138269080 is a wasteful number, since it uses less digits than its factorization.

138269080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 138269080 is about 11758.7873524441. The cubic root of 138269080 is about 517.1005794087.

The spelling of 138269080 in words is "one hundred thirty-eight million, two hundred sixty-nine thousand, eighty".