47777580 has 96 divisors (see below), whose sum is σ = 150259200. Its totient is φ = 12602304.

The previous prime is 47777567. The next prime is 47777581. The reversal of 47777580 is 8577774.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (47777581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55191 + ... + 56049.

It is an arithmetic number, because the mean of its divisors is an integer number (1565200).

Almost surely, 2^47777580 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 47777580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75129600).

47777580 is an abundant number, since it is smaller than the sum of its proper divisors (102481620).

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

47777580 is a wasteful number, since it uses less digits than its factorization.

47777580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The square root of 47777580 is about 6912.1328112240. The cubic root of 47777580 is about 362.8619104564.

The spelling of 47777580 in words is "forty-seven million, seven hundred seventy-seven thousand, five hundred eighty".