117451290 has 32 divisors (see below), whose sum is σ = 307509696. Its totient is φ = 28472960.

The previous prime is 117451289. The next prime is 117451297. The reversal of 117451290 is 92154711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (117451297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177627 + ... + 178286.

It is an arithmetic number, because the mean of its divisors is an integer number (9609678).

Almost surely, 2^117451290 is an apocalyptic number.

117451290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117451290 is an abundant number, since it is smaller than the sum of its proper divisors (190058406).

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

117451290 is a wasteful number, since it uses less digits than its factorization.

117451290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355934.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 117451290 is about 10837.4946366769. The cubic root of 117451290 is about 489.7253632451.

The spelling of 117451290 in words is "one hundred seventeen million, four hundred fifty-one thousand, two hundred ninety".