47581980 has 48 divisors (see below), whose sum is σ = 141069600. Its totient is φ = 11941888.

The previous prime is 47581979. The next prime is 47581987. The reversal of 47581980 is 8918574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47581987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22305 + ... + 24344.

It is an arithmetic number, because the mean of its divisors is an integer number (2938950).

Almost surely, 2^47581980 is an apocalyptic number.

It is an amenable number.

47581980 is an abundant number, since it is smaller than the sum of its proper divisors (93487620).

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

47581980 is a wasteful number, since it uses less digits than its factorization.

47581980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46678 (or 46676 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 47581980 is about 6897.9692663856. The cubic root of 47581980 is about 362.3660511839.

The spelling of 47581980 in words is "forty-seven million, five hundred eighty-one thousand, nine hundred eighty".