72913457 has 8 divisors (see below), whose sum is σ = 77102592. Its totient is φ = 68839200.

The previous prime is 72913433. The next prime is 72913481. The reversal of 72913457 is 75431927.

It is an interprime number because it is at equal distance from previous prime (72913433) and next prime (72913481).

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 72913457 - 2¹⁴ = 72897073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72913457.

It is not an unprimeable number, because it can be changed into a prime (72913957) 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, 27413 + ... + 29954.

It is an arithmetic number, because the mean of its divisors is an integer number (9637824).

Almost surely, 2^72913457 is an apocalyptic number.

It is an amenable number.

72913457 is a deficient number, since it is larger than the sum of its proper divisors (4189135).

72913457 is a wasteful number, since it uses less digits than its factorization.

72913457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439.

The product of its digits is 52920, while the sum is 38.

The square root of 72913457 is about 8538.9376973954. The cubic root of 72913457 is about 417.7686979132.

The spelling of 72913457 in words is "seventy-two million, nine hundred thirteen thousand, four hundred fifty-seven".