72057478 has 8 divisors (see below), whose sum is σ = 108635472. Its totient is φ = 35845656.

The previous prime is 72057473. The next prime is 72057511. The reversal of 72057478 is 87475027.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72057478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72057473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91050 + ... + 91837.

It is an arithmetic number, because the mean of its divisors is an integer number (13579434).

Almost surely, 2^72057478 is an apocalyptic number.

72057478 is a deficient number, since it is larger than the sum of its proper divisors (36577994).

72057478 is a wasteful number, since it uses less digits than its factorization.

72057478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183086.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 72057478 is about 8488.6676221890. The cubic root of 72057478 is about 416.1274379967.

The spelling of 72057478 in words is "seventy-two million, fifty-seven thousand, four hundred seventy-eight".