47731730 has 8 divisors (see below), whose sum is σ = 85917132. Its totient is φ = 19092688.

The previous prime is 47731729. The next prime is 47731741. The reversal of 47731730 is 3713774.

It can be written as a sum of positive squares in 2 ways, for example, as 45954841 + 1776889 = 6779^2 + 1333^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2386577 + ... + 2386596.

Almost surely, 2^47731730 is an apocalyptic number.

47731730 is a deficient number, since it is larger than the sum of its proper divisors (38185402).

47731730 is a wasteful number, since it uses less digits than its factorization.

47731730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773180.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 47731730 is about 6908.8153832622. The cubic root of 47731730 is about 362.7457992076.

The spelling of 47731730 in words is "forty-seven million, seven hundred thirty-one thousand, seven hundred thirty".