73800138 has 16 divisors (see below), whose sum is σ = 147797280. Its totient is φ = 24567216.

The previous prime is 73800137. The next prime is 73800149. The reversal of 73800138 is 83100837.

It is not an unprimeable number, because it can be changed into a prime (73800131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3093 + ... + 12536.

It is an arithmetic number, because the mean of its divisors is an integer number (9237330).

Almost surely, 2^73800138 is an apocalyptic number.

73800138 is an abundant number, since it is smaller than the sum of its proper divisors (73997142).

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

73800138 is a wasteful number, since it uses less digits than its factorization.

73800138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16421.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 73800138 is about 8590.7006699105. The cubic root of 73800138 is about 419.4553370613.

The spelling of 73800138 in words is "seventy-three million, eight hundred thousand, one hundred thirty-eight".