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115240680 = 23325320113
BaseRepresentation
bin1101101111001…
…10111011101000
322000211211111100
412313212323220
5214000200210
615234001400
72566346442
oct667467350
9260754440
10115240680
115a061035
1232716260
131ab4b869
141143b492
15a1b55c0
hex6de6ee8

115240680 has 48 divisors (see below), whose sum is σ = 374533380. Its totient is φ = 30730752.

The previous prime is 115240679. The next prime is 115240687. The reversal of 115240680 is 86042511.

It can be written as a sum of positive squares in 2 ways, for example, as 110124036 + 5116644 = 10494^2 + 2262^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (115240687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159697 + ... + 160416.

Almost surely, 2115240680 is an apocalyptic number.

115240680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115240680 is an abundant number, since it is smaller than the sum of its proper divisors (259292700).

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

115240680 is a wasteful number, since it uses less digits than its factorization.

115240680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320130 (or 320123 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 115240680 is about 10735.0211923405. The cubic root of 115240680 is about 486.6334269744.

The spelling of 115240680 in words is "one hundred fifteen million, two hundred forty thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 320113 640226 960339 1280452 1600565 1920678 2560904 2881017 3201130 3841356 4801695 5762034 6402260 7682712 9603390 11524068 12804520 14405085 19206780 23048136 28810170 38413560 57620340 115240680