47777888 has 48 divisors (see below), whose sum is σ = 101080224. Its totient is φ = 22149120.

The previous prime is 47777881. The next prime is 47777903. The reversal of 47777888 is 88877774.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47777881) 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, 38006 + ... + 39242.

It is an arithmetic number, because the mean of its divisors is an integer number (2105838).

Almost surely, 2^47777888 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 47777888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50540112).

47777888 is an abundant number, since it is smaller than the sum of its proper divisors (53302336).

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

47777888 is a wasteful number, since it uses less digits than its factorization.

47777888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1327 counting only the distinct ones).

The product of its digits is 4917248, while the sum is 56.

The square root of 47777888 is about 6912.1550908526. The cubic root of 47777888 is about 362.8626901891.

The spelling of 47777888 in words is "forty-seven million, seven hundred seventy-seven thousand, eight hundred eighty-eight".