72190347 has 8 divisors (see below), whose sum is σ = 101915856. Its totient is φ = 45295872.

The previous prime is 72190337. The next prime is 72190387. The reversal of 72190347 is 74309127.

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

It is not a de Polignac number, because 72190347 - 2⁸ = 72190091 is a prime.

It is a super-2 number, since 2×72190347² = 10422892399960818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72190337) 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, 707698 + ... + 707799.

It is an arithmetic number, because the mean of its divisors is an integer number (12739482).

Almost surely, 2^72190347 is an apocalyptic number.

72190347 is a deficient number, since it is larger than the sum of its proper divisors (29725509).

72190347 is a wasteful number, since it uses less digits than its factorization.

72190347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415517.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72190347 is about 8496.4902754020. The cubic root of 72190347 is about 416.3830510108.

The spelling of 72190347 in words is "seventy-two million, one hundred ninety thousand, three hundred forty-seven".