47256578 has 16 divisors (see below), whose sum is σ = 72283320. Its totient is φ = 23164800.

The previous prime is 47256577. The next prime is 47256589. The reversal of 47256578 is 87565274.

It can be written as a sum of positive squares in 4 ways, for example, as 18601969 + 28654609 = 4313^2 + 5353^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47256571) 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, 61718 + ... + 62478.

Almost surely, 2^47256578 is an apocalyptic number.

47256578 is a deficient number, since it is larger than the sum of its proper divisors (25026742).

47256578 is a wasteful number, since it uses less digits than its factorization.

47256578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 470400, while the sum is 44.

The square root of 47256578 is about 6874.3420048758. The cubic root of 47256578 is about 361.5381154783.

The spelling of 47256578 in words is "forty-seven million, two hundred fifty-six thousand, five hundred seventy-eight".