47957780 has 48 divisors (see below), whose sum is σ = 109320960. Its totient is φ = 17566848.

The previous prime is 47957761. The next prime is 47957807. The reversal of 47957780 is 8775974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35477 + ... + 36803.

It is an arithmetic number, because the mean of its divisors is an integer number (2277520).

Almost surely, 2^47957780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47957780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54660480).

47957780 is an abundant number, since it is smaller than the sum of its proper divisors (61363180).

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

47957780 is a wasteful number, since it uses less digits than its factorization.

47957780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 47957780 is about 6925.1555939199. The cubic root of 47957780 is about 363.3175333776.

The spelling of 47957780 in words is "forty-seven million, nine hundred fifty-seven thousand, seven hundred eighty".