117147240 has 288 divisors, whose sum is σ = 460161000. Its totient is φ = 25740288.

The previous prime is 117147223. The next prime is 117147241. The reversal of 117147240 is 42741711.

It can be written as a sum of positive squares in 4 ways, for example, as 112911876 + 4235364 = 10626^2 + 2058^2 .

It is not an unprimeable number, because it can be changed into a prime (117147241) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 511446 + ... + 511674.

Almost surely, 2^117147240 is an apocalyptic number.

117147240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117147240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230080500).

117147240 is an abundant number, since it is smaller than the sum of its proper divisors (343013760).

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

117147240 is a wasteful number, since it uses less digits than its factorization.

117147240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 117147240 is about 10823.4578578197. The cubic root of 117147240 is about 489.3024087020.

Adding to 117147240 its reverse (42741711), we get a palindrome (159888951).

The spelling of 117147240 in words is "one hundred seventeen million, one hundred forty-seven thousand, two hundred forty".