73189930 has 32 divisors (see below), whose sum is σ = 152176320. Its totient is φ = 25048320.

The previous prime is 73189927. The next prime is 73189931. The reversal of 73189930 is 3998137.

It is not an unprimeable number, because it can be changed into a prime (73189931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17700 + ... + 21439.

It is an arithmetic number, because the mean of its divisors is an integer number (4755510).

Almost surely, 2^73189930 is an apocalyptic number.

73189930 is an abundant number, since it is smaller than the sum of its proper divisors (78986390).

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

73189930 is a wasteful number, since it uses less digits than its factorization.

73189930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39174.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 73189930 is about 8555.1113376741. Note that the first 3 decimals coincide. The cubic root of 73189930 is about 418.2960632324.

The spelling of 73189930 in words is "seventy-three million, one hundred eighty-nine thousand, nine hundred thirty".