72578473 has 8 divisors (see below), whose sum is σ = 79279200. Its totient is φ = 65894880.

The previous prime is 72578449. The next prime is 72578477. The reversal of 72578473 is 37487527.

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-72578473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72578477) 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, 5578 + ... + 13276.

It is an arithmetic number, because the mean of its divisors is an integer number (9909900).

Almost surely, 2^72578473 is an apocalyptic number.

It is an amenable number.

72578473 is a deficient number, since it is larger than the sum of its proper divisors (6700727).

72578473 is a wasteful number, since it uses less digits than its factorization.

72578473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567.

The product of its digits is 329280, while the sum is 43.

The square root of 72578473 is about 8519.3000299320. The cubic root of 72578473 is about 417.1279351048.

The spelling of 72578473 in words is "seventy-two million, five hundred seventy-eight thousand, four hundred seventy-three".