117887988 has 24 divisors (see below), whose sum is σ = 275322880. Its totient is φ = 39260160.

The previous prime is 117887933. The next prime is 117888011. The reversal of 117887988 is 889788711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11508 + ... + 19188.

Almost surely, 2^117887988 is an apocalyptic number.

It is an amenable number.

117887988 is an abundant number, since it is smaller than the sum of its proper divisors (157434892).

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

117887988 is a wasteful number, since it uses less digits than its factorization.

117887988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8967 (or 8965 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 57.

The square root of 117887988 is about 10857.6234968800. The cubic root of 117887988 is about 490.3315651235.

The spelling of 117887988 in words is "one hundred seventeen million, eight hundred eighty-seven thousand, nine hundred eighty-eight".