47212730 has 16 divisors (see below), whose sum is σ = 87056424. Its totient is φ = 18424320.

The previous prime is 47212729. The next prime is 47212733. The reversal of 47212730 is 3721274.

It can be written as a sum of positive squares in 4 ways, for example, as 31618129 + 15594601 = 5623^2 + 3949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47212730.

It is not an unprimeable number, because it can be changed into a prime (47212733) 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, 57167 + ... + 57986.

Almost surely, 2^47212730 is an apocalyptic number.

47212730 is a deficient number, since it is larger than the sum of its proper divisors (39843694).

47212730 is a wasteful number, since it uses less digits than its factorization.

47212730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115201.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 47212730 is about 6871.1520140367. The cubic root of 47212730 is about 361.4262606524.

The spelling of 47212730 in words is "forty-seven million, two hundred twelve thousand, seven hundred thirty".