72473990 has 8 divisors (see below), whose sum is σ = 130453200. Its totient is φ = 28989592.

The previous prime is 72473981. The next prime is 72474013. The reversal of 72473990 is 9937427.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3623690 + ... + 3623709.

It is an arithmetic number, because the mean of its divisors is an integer number (16306650).

Almost surely, 2^72473990 is an apocalyptic number.

72473990 is a deficient number, since it is larger than the sum of its proper divisors (57979210).

72473990 is a wasteful number, since it uses less digits than its factorization.

72473990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247406.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 72473990 is about 8513.1656861593. The cubic root of 72473990 is about 416.9276750427.

The spelling of 72473990 in words is "seventy-two million, four hundred seventy-three thousand, nine hundred ninety".