138154560 has 112 divisors (see below), whose sum is σ = 457785216. Its totient is φ = 35233792.

The previous prime is 138154547. The next prime is 138154609. The reversal of 138154560 is 65451831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18952 + ... + 25208.

It is an arithmetic number, because the mean of its divisors is an integer number (4087368).

Almost surely, 2^138154560 is an apocalyptic number.

138154560 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 138154560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228892608).

138154560 is an abundant number, since it is smaller than the sum of its proper divisors (319630656).

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

138154560 is a wasteful number, since it uses less digits than its factorization.

138154560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 138154560 is about 11753.9167939883. The cubic root of 138154560 is about 516.9577788277.

The spelling of 138154560 in words is "one hundred thirty-eight million, one hundred fifty-four thousand, five hundred sixty".