47805312 has 32 divisors (see below), whose sum is σ = 126983880. Its totient is φ = 15934976.

The previous prime is 47805299. The next prime is 47805319. The reversal of 47805312 is 21350874.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 47805312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47805319) 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, 61863 + ... + 62630.

Almost surely, 2^47805312 is an apocalyptic number.

It is an amenable number.

47805312 is an abundant number, since it is smaller than the sum of its proper divisors (79178568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47805312 is a wasteful number, since it uses less digits than its factorization.

47805312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124510 (or 124498 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 47805312 is about 6914.1385580562. The cubic root of 47805312 is about 362.9321033528.

The spelling of 47805312 in words is "forty-seven million, eight hundred five thousand, three hundred twelve".