73185940 has 24 divisors (see below), whose sum is σ = 154556640. Its totient is φ = 29109408.

The previous prime is 73185911. The next prime is 73185949. The reversal of 73185940 is 4958137.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73185940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73185949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6642 + ... + 13801.

It is an arithmetic number, because the mean of its divisors is an integer number (6439860).

Almost surely, 2^73185940 is an apocalyptic number.

It is an amenable number.

73185940 is an abundant number, since it is smaller than the sum of its proper divisors (81370700).

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

73185940 is a wasteful number, since it uses less digits than its factorization.

73185940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20631 (or 20629 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 73185940 is about 8554.8781405699. The cubic root of 73185940 is about 418.2884618605.

The spelling of 73185940 in words is "seventy-three million, one hundred eighty-five thousand, nine hundred forty".