47810772 has 18 divisors (see below), whose sum is σ = 120855098. Its totient is φ = 15936912.

The previous prime is 47810747. The next prime is 47810803. The reversal of 47810772 is 27701874.

It can be written as a sum of positive squares in only one way, i.e., 26687556 + 21123216 = 5166^2 + 4596^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1328077 = 47810772 / (4 + 7 + 8 + 1 + 0 + 7 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664003 + ... + 664074.

Almost surely, 2^47810772 is an apocalyptic number.

It is an amenable number.

47810772 is an abundant number, since it is smaller than the sum of its proper divisors (73044326).

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

47810772 is a wasteful number, since it uses less digits than its factorization.

47810772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328087 (or 1328082 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 47810772 is about 6914.5333898970. The cubic root of 47810772 is about 362.9459200450.

The spelling of 47810772 in words is "forty-seven million, eight hundred ten thousand, seven hundred seventy-two".