72343990 has 8 divisors (see below), whose sum is σ = 130219200. Its totient is φ = 28937592.

The previous prime is 72343981. The next prime is 72344021. The reversal of 72343990 is 9934327.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3617190 + ... + 3617209.

It is an arithmetic number, because the mean of its divisors is an integer number (16277400).

Almost surely, 2^72343990 is an apocalyptic number.

72343990 is a deficient number, since it is larger than the sum of its proper divisors (57875210).

72343990 is a wasteful number, since it uses less digits than its factorization.

72343990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234406.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 72343990 is about 8505.5270265869. The cubic root of 72343990 is about 416.6782382564.

The spelling of 72343990 in words is "seventy-two million, three hundred forty-three thousand, nine hundred ninety".