73437990 has 16 divisors (see below), whose sum is σ = 176251248. Its totient is φ = 19583456.

The previous prime is 73437979. The next prime is 73437997. The reversal of 73437990 is 9973437.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73437997) 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, 1223937 + ... + 1223996.

It is an arithmetic number, because the mean of its divisors is an integer number (11015703).

Almost surely, 2^73437990 is an apocalyptic number.

73437990 is an abundant number, since it is smaller than the sum of its proper divisors (102813258).

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

73437990 is a wasteful number, since it uses less digits than its factorization.

73437990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447943.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 73437990 is about 8569.5968399919. The cubic root of 73437990 is about 418.7681022842.

The spelling of 73437990 in words is "seventy-three million, four hundred thirty-seven thousand, nine hundred ninety".