47808730 has 16 divisors (see below), whose sum is σ = 86181480. Its totient is φ = 19095552.

The previous prime is 47808707. The next prime is 47808749. The reversal of 47808730 is 3780874.

It can be written as a sum of positive squares in 4 ways, for example, as 40717161 + 7091569 = 6381^2 + 2663^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47808730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4582 + ... + 10798.

Almost surely, 2^47808730 is an apocalyptic number.

47808730 is a deficient number, since it is larger than the sum of its proper divisors (38372750).

47808730 is a wasteful number, since it uses less digits than its factorization.

47808730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6993.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 47808730 is about 6914.3857283203. The cubic root of 47808730 is about 362.9407528265.

The spelling of 47808730 in words is "forty-seven million, eight hundred eight thousand, seven hundred thirty".