138703136 has 96 divisors (see below), whose sum is σ = 339873408. Its totient is φ = 54743040.

The previous prime is 138703099. The next prime is 138703141. The reversal of 138703136 is 631307831.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 76901 + ... + 78683.

It is an arithmetic number, because the mean of its divisors is an integer number (3540348).

Almost surely, 2^138703136 is an apocalyptic number.

138703136 is a gapful number since it is divisible by the number (16) 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 138703136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169936704).

138703136 is an abundant number, since it is smaller than the sum of its proper divisors (201170272).

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

138703136 is a wasteful number, since it uses less digits than its factorization.

138703136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834 (or 1826 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 138703136 is about 11777.2295553751. The cubic root of 138703136 is about 517.6411103595.

The spelling of 138703136 in words is "one hundred thirty-eight million, seven hundred three thousand, one hundred thirty-six".