73271990 has 16 divisors (see below), whose sum is σ = 143879760. Its totient is φ = 26644320.

The previous prime is 73271987. The next prime is 73272011. The reversal of 73271990 is 9917237.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 332945 + ... + 333164.

It is an arithmetic number, because the mean of its divisors is an integer number (8992485).

Almost surely, 2^73271990 is an apocalyptic number.

73271990 is a deficient number, since it is larger than the sum of its proper divisors (70607770).

73271990 is a wasteful number, since it uses less digits than its factorization.

73271990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666127.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 73271990 is about 8559.9059574273. The cubic root of 73271990 is about 418.4523349785.

The spelling of 73271990 in words is "seventy-three million, two hundred seventy-one thousand, nine hundred ninety".