72971357 has 8 divisors (see below), whose sum is σ = 73570560. Its totient is φ = 72375120.

The previous prime is 72971333. The next prime is 72971369. The reversal of 72971357 is 75317927.

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

It is a cyclic number.

It is not a de Polignac number, because 72971357 - 2¹⁶ = 72905821 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 (72971557) 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, 78944 + ... + 79862.

It is an arithmetic number, because the mean of its divisors is an integer number (9196320).

Almost surely, 2^72971357 is an apocalyptic number.

It is an amenable number.

72971357 is a deficient number, since it is larger than the sum of its proper divisors (599203).

72971357 is a wasteful number, since it uses less digits than its factorization.

72971357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its digits is 92610, while the sum is 41.

The square root of 72971357 is about 8542.3273760726. The cubic root of 72971357 is about 417.8792509291.

The spelling of 72971357 in words is "seventy-two million, nine hundred seventy-one thousand, three hundred fifty-seven".