8147988 has 36 divisors (see below), whose sum is σ = 20704320. Its totient is φ = 2701776.

The previous prime is 8147987. The next prime is 8147999. The reversal of 8147988 is 8897418.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8131 + ... + 9077.

It is an arithmetic number, because the mean of its divisors is an integer number (575120).

Almost surely, 2^8147988 is an apocalyptic number.

It is an amenable number.

8147988 is an abundant number, since it is smaller than the sum of its proper divisors (12556332).

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

8147988 is a wasteful number, since it uses less digits than its factorization.

8147988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1191 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8147988 is about 2854.4680765425. The cubic root of 8147988 is about 201.2257062094.

The spelling of 8147988 in words is "eight million, one hundred forty-seven thousand, nine hundred eighty-eight".