72295391 has 8 divisors (see below), whose sum is σ = 83426304. Its totient is φ = 61365240.

The previous prime is 72295369. The next prime is 72295397. The reversal of 72295391 is 19359227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72295391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72295397) 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, 49415 + ... + 50856.

It is an arithmetic number, because the mean of its divisors is an integer number (10428288).

Almost surely, 2^72295391 is an apocalyptic number.

72295391 is a deficient number, since it is larger than the sum of its proper divisors (11130913).

72295391 is a wasteful number, since it uses less digits than its factorization.

72295391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100381.

The product of its digits is 34020, while the sum is 38.

The square root of 72295391 is about 8502.6696395897. The cubic root of 72295391 is about 416.5849124578.

The spelling of 72295391 in words is "seventy-two million, two hundred ninety-five thousand, three hundred ninety-one".