138557300 has 54 divisors (see below), whose sum is σ = 349770582. Its totient is φ = 47503680.

The previous prime is 138557297. The next prime is 138557303. The reversal of 138557300 is 3755831.

It is an interprime number because it is at equal distance from previous prime (138557297) and next prime (138557303).

It can be written as a sum of positive squares in 3 ways, for example, as 4831204 + 133726096 = 2198^2 + 11564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138557303) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9239 + ... + 19038.

It is an arithmetic number, because the mean of its divisors is an integer number (6477233).

Almost surely, 2^138557300 is an apocalyptic number.

138557300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138557300 is an abundant number, since it is smaller than the sum of its proper divisors (211213282).

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

138557300 is a wasteful number, since it uses less digits than its factorization.

138557300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28305 (or 28291 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 138557300 is about 11771.0364879224. The cubic root of 138557300 is about 517.4596264021.

It can be divided in two parts, 1385 and 57300, that added together give a palindrome (58685).

The spelling of 138557300 in words is "one hundred thirty-eight million, five hundred fifty-seven thousand, three hundred".