117724890 has 16 divisors (see below), whose sum is σ = 282539808. Its totient is φ = 31393296.

The previous prime is 117724889. The next prime is 117724897. The reversal of 117724890 is 98427711.

It is not an unprimeable number, because it can be changed into a prime (117724897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962052 + ... + 1962111.

It is an arithmetic number, because the mean of its divisors is an integer number (17658738).

Almost surely, 2^117724890 is an apocalyptic number.

117724890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117724890 is an abundant number, since it is smaller than the sum of its proper divisors (164814918).

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

117724890 is a wasteful number, since it uses less digits than its factorization.

117724890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924173.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 117724890 is about 10850.1101376898. The cubic root of 117724890 is about 490.1053362323.

The spelling of 117724890 in words is "one hundred seventeen million, seven hundred twenty-four thousand, eight hundred ninety".