138234760 has 32 divisors (see below), whose sum is σ = 311405400. Its totient is φ = 55226880.

The previous prime is 138234749. The next prime is 138234773. The reversal of 138234760 is 67432831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114789796 + 23444964 = 10714^2 + 4842^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 43630 + ... + 46690.

Almost surely, 2^138234760 is an apocalyptic number.

138234760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138234760 is an abundant number, since it is smaller than the sum of its proper divisors (173170640).

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

138234760 is a wasteful number, since it uses less digits than its factorization.

138234760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201 (or 4197 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 138234760 is about 11757.3279277224. The cubic root of 138234760 is about 517.0577924014.

The spelling of 138234760 in words is "one hundred thirty-eight million, two hundred thirty-four thousand, seven hundred sixty".