138556200 has 96 divisors (see below), whose sum is σ = 444391200. Its totient is φ = 35669760.

The previous prime is 138556199. The next prime is 138556217. The reversal of 138556200 is 2655831.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13419 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (4629075).

Almost surely, 2^138556200 is an apocalyptic number.

138556200 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 138556200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222195600).

138556200 is an abundant number, since it is smaller than the sum of its proper divisors (305835000).

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

138556200 is a wasteful number, since it uses less digits than its factorization.

138556200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011 (or 8002 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 138556200 is about 11770.9897629724. The cubic root of 138556200 is about 517.4582570358.

The spelling of 138556200 in words is "one hundred thirty-eight million, five hundred fifty-six thousand, two hundred".