138247360 has 28 divisors (see below), whose sum is σ = 329202288. Its totient is φ = 55298816.

The previous prime is 138247357. The next prime is 138247387. The reversal of 138247360 is 63742831.

It is a happy number.

It is a super-2 number, since 2×138247360² = 38224665093939200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 215692 + ... + 216331.

Almost surely, 2^138247360 is an apocalyptic number.

138247360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138247360 is an abundant number, since it is smaller than the sum of its proper divisors (190954928).

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

138247360 is an equidigital number, since it uses as much as digits as its factorization.

138247360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432040 (or 432030 counting only the distinct ones).

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

The square root of 138247360 is about 11757.8637515494. The cubic root of 138247360 is about 517.0735017407.

The spelling of 138247360 in words is "one hundred thirty-eight million, two hundred forty-seven thousand, three hundred sixty".