47277820 has 12 divisors (see below), whose sum is σ = 99283464. Its totient is φ = 18911120.

The previous prime is 47277809. The next prime is 47277827. The reversal of 47277820 is 2877274.

It is a self number, because there is not a number n which added to its sum of digits gives 47277820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47277827) 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, 1181926 + ... + 1181965.

It is an arithmetic number, because the mean of its divisors is an integer number (8273622).

Almost surely, 2^47277820 is an apocalyptic number.

It is an amenable number.

47277820 is an abundant number, since it is smaller than the sum of its proper divisors (52005644).

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

47277820 is a wasteful number, since it uses less digits than its factorization.

47277820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363900 (or 2363898 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 47277820 is about 6875.8868518905. The cubic root of 47277820 is about 361.5922782535.

The spelling of 47277820 in words is "forty-seven million, two hundred seventy-seven thousand, eight hundred twenty".