138036400 has 60 divisors (see below), whose sum is σ = 337311000. Its totient is φ = 54269440.

The previous prime is 138036373. The next prime is 138036421. The reversal of 138036400 is 4630831.

138036400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20676 + ... + 26524.

It is an arithmetic number, because the mean of its divisors is an integer number (5621850).

Almost surely, 2^138036400 is an apocalyptic number.

138036400 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 138036400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168655500).

138036400 is an abundant number, since it is smaller than the sum of its proper divisors (199274600).

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

138036400 is a wasteful number, since it uses less digits than its factorization.

138036400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 5915 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 138036400 is about 11748.8893092071. The cubic root of 138036400 is about 516.8103566124.

The spelling of 138036400 in words is "one hundred thirty-eight million, thirty-six thousand, four hundred".