72870357 has 8 divisors (see below), whose sum is σ = 111040576. Its totient is φ = 41640192.

The previous prime is 72870349. The next prime is 72870361. The reversal of 72870357 is 75307827.

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

It is not a de Polignac number, because 72870357 - 2³ = 72870349 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 (72870307) 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, 1734988 + ... + 1735029.

It is an arithmetic number, because the mean of its divisors is an integer number (13880072).

Almost surely, 2^72870357 is an apocalyptic number.

It is an amenable number.

72870357 is a deficient number, since it is larger than the sum of its proper divisors (38170219).

72870357 is a wasteful number, since it uses less digits than its factorization.

72870357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470027.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 72870357 is about 8536.4135911986. The cubic root of 72870357 is about 417.6863656954.

The spelling of 72870357 in words is "seventy-two million, eight hundred seventy thousand, three hundred fifty-seven".