72370390 has 8 divisors (see below), whose sum is σ = 130266720. Its totient is φ = 28948152.

The previous prime is 72370381. The next prime is 72370391. The reversal of 72370390 is 9307327.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72370391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618510 + ... + 3618529.

It is an arithmetic number, because the mean of its divisors is an integer number (16283340).

Almost surely, 2^72370390 is an apocalyptic number.

72370390 is a deficient number, since it is larger than the sum of its proper divisors (57896330).

72370390 is a wasteful number, since it uses less digits than its factorization.

72370390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7237046.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 72370390 is about 8507.0788170793. The cubic root of 72370390 is about 416.7289172770.

The spelling of 72370390 in words is "seventy-two million, three hundred seventy thousand, three hundred ninety".