138401360 has 40 divisors (see below), whose sum is σ = 332169216. Its totient is φ = 53573760.

The previous prime is 138401317. The next prime is 138401371. The reversal of 138401360 is 63104831.

138401360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 25424 + ... + 30383.

Almost surely, 2^138401360 is an apocalyptic number.

138401360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138401360 is an abundant number, since it is smaller than the sum of its proper divisors (193767856).

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

138401360 is a wasteful number, since it uses less digits than its factorization.

138401360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55851 (or 55845 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 138401360 is about 11764.4107374743. The cubic root of 138401360 is about 517.2654276962.

The spelling of 138401360 in words is "one hundred thirty-eight million, four hundred one thousand, three hundred sixty".