47988936 has 80 divisors (see below), whose sum is σ = 135907200. Its totient is φ = 15818976.

The previous prime is 47988929. The next prime is 47988937. The reversal of 47988936 is 63988974.

47988936 is a `hidden beast` number, since 479 + 88 + 93 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47988937) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 66385 + ... + 67103.

It is an arithmetic number, because the mean of its divisors is an integer number (1698840).

Almost surely, 2^47988936 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 47988936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67953600).

47988936 is an abundant number, since it is smaller than the sum of its proper divisors (87918264).

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

47988936 is a wasteful number, since it uses less digits than its factorization.

47988936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 827 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 47988936 is about 6927.4047088358. The cubic root of 47988936 is about 363.3961933343.

The spelling of 47988936 in words is "forty-seven million, nine hundred eighty-eight thousand, nine hundred thirty-six".