73284138 has 48 divisors (see below), whose sum is σ = 163800000. Its totient is φ = 23664960.

The previous prime is 73284061. The next prime is 73284143. The reversal of 73284138 is 83148237.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146613 + ... + 147111.

It is an arithmetic number, because the mean of its divisors is an integer number (3412500).

Almost surely, 2^73284138 is an apocalyptic number.

73284138 is an abundant number, since it is smaller than the sum of its proper divisors (90515862).

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

73284138 is a wasteful number, since it uses less digits than its factorization.

73284138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 744 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 73284138 is about 8560.6155152536. The cubic root of 73284138 is about 418.4754592222.

The spelling of 73284138 in words is "seventy-three million, two hundred eighty-four thousand, one hundred thirty-eight".