117997850 has 24 divisors (see below), whose sum is σ = 232388028. Its totient is φ = 44422400.

The previous prime is 117997849. The next prime is 117997883. The reversal of 117997850 is 58799711.

It can be written as a sum of positive squares in 6 ways, for example, as 34586161 + 83411689 = 5881^2 + 9133^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117997795 and 117997804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68561 + ... + 70260.

Almost surely, 2^117997850 is an apocalyptic number.

117997850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117997850 is a deficient number, since it is larger than the sum of its proper divisors (114390178).

117997850 is a wasteful number, since it uses less digits than its factorization.

117997850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138850 (or 138845 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 117997850 is about 10862.6815289780. The cubic root of 117997850 is about 490.4838341890.

The spelling of 117997850 in words is "one hundred seventeen million, nine hundred ninety-seven thousand, eight hundred fifty".