47881780 has 24 divisors (see below), whose sum is σ = 100945152. Its totient is φ = 19077792.

The previous prime is 47881721. The next prime is 47881781. The reversal of 47881780 is 8718874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47881781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (4206048).

Almost surely, 2^47881780 is an apocalyptic number.

It is an amenable number.

47881780 is an abundant number, since it is smaller than the sum of its proper divisors (53063372).

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

47881780 is a wasteful number, since it uses less digits than its factorization.

47881780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375 (or 9373 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 47881780 is about 6919.6661769192. Note that the first 3 decimals coincide. The cubic root of 47881780 is about 363.1255121783.

The spelling of 47881780 in words is "forty-seven million, eight hundred eighty-one thousand, seven hundred eighty".