138952500 has 120 divisors (see below), whose sum is σ = 411468288. Its totient is φ = 36480000.

The previous prime is 138952481. The next prime is 138952511. The reversal of 138952500 is 5259831.

138952500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 727405 + ... + 727595.

Almost surely, 2^138952500 is an apocalyptic number.

138952500 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 138952500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205734144).

138952500 is an abundant number, since it is smaller than the sum of its proper divisors (272515788).

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

138952500 is a wasteful number, since it uses less digits than its factorization.

138952500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 138952500 is about 11787.8115017165. The cubic root of 138952500 is about 517.9511340635.

The spelling of 138952500 in words is "one hundred thirty-eight million, nine hundred fifty-two thousand, five hundred".