117887390 has 32 divisors (see below), whose sum is σ = 216258336. Its totient is φ = 46261120.

The previous prime is 117887377. The next prime is 117887417. The reversal of 117887390 is 93788711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143180 + ... + 144000.

It is an arithmetic number, because the mean of its divisors is an integer number (6758073).

Almost surely, 2^117887390 is an apocalyptic number.

117887390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117887390 is a deficient number, since it is larger than the sum of its proper divisors (98370946).

117887390 is a wasteful number, since it uses less digits than its factorization.

117887390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 117887390 is about 10857.5959585905. The cubic root of 117887390 is about 490.3307360349.

The spelling of 117887390 in words is "one hundred seventeen million, eight hundred eighty-seven thousand, three hundred ninety".