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109868680 = 2352746717
BaseRepresentation
bin1101000110001…
…11011010001000
321122201220111101
412203013122020
5211111244210
614522511144
72502603565
oct643073210
9248656441
10109868680
1157021a69
12309654b4
13199ba66c
141083d86c
1599a3a3a
hex68c7688

109868680 has 16 divisors (see below), whose sum is σ = 247204620. Its totient is φ = 43947456.

The previous prime is 109868669. The next prime is 109868687. The reversal of 109868680 is 86868901.

It can be written as a sum of positive squares in 2 ways, for example, as 94984516 + 14884164 = 9746^2 + 3858^2 .

It is a super-2 number, since 2×1098686802 = 24142253689884800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109868680.

It is not an unprimeable number, because it can be changed into a prime (109868687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373319 + ... + 1373398.

Almost surely, 2109868680 is an apocalyptic number.

109868680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109868680 is an abundant number, since it is smaller than the sum of its proper divisors (137335940).

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

109868680 is a wasteful number, since it uses less digits than its factorization.

109868680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746728 (or 2746724 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 109868680 is about 10481.8261767690. The cubic root of 109868680 is about 478.9512403096.

The spelling of 109868680 in words is "one hundred nine million, eight hundred sixty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 2746717 5493434 10986868 13733585 21973736 27467170 54934340 109868680