138343800 has 96 divisors (see below), whose sum is σ = 490147200. Its totient is φ = 31620480.

The previous prime is 138343789. The next prime is 138343817. The reversal of 138343800 is 8343831.

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

It is a congruent number.

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, 12270 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (5105700).

Almost surely, 2^138343800 is an apocalyptic number.

138343800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138343800 is an abundant number, since it is smaller than the sum of its proper divisors (351803400).

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

138343800 is a wasteful number, since it uses less digits than its factorization.

138343800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32965 (or 32956 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 138343800 is about 11761.9641216933. The cubic root of 138343800 is about 517.1937089247.

The spelling of 138343800 in words is "one hundred thirty-eight million, three hundred forty-three thousand, eight hundred".