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108404681 = 7112361211
BaseRepresentation
bin1100111011000…
…01111111001001
321112222112021012
412131201333021
5210222422211
614431253305
72454265430
oct635417711
9245875235
10108404681
1156212050
123037a235
13195c71a8
141057c117
1597b4d8b
hex6761fc9

108404681 has 16 divisors (see below), whose sum is σ = 141032448. Its totient is φ = 80797200.

The previous prime is 108404651. The next prime is 108404683. The reversal of 108404681 is 186404801.

It is not a de Polignac number, because 108404681 - 226 = 41295817 is a prime.

It is a super-2 number, since 2×1084046812 = 23503149725423522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108404683) 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, 28835 + ... + 32376.

It is an arithmetic number, because the mean of its divisors is an integer number (8814528).

Almost surely, 2108404681 is an apocalyptic number.

108404681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108404681 is a deficient number, since it is larger than the sum of its proper divisors (32627767).

108404681 is a wasteful number, since it uses less digits than its factorization.

108404681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61252.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 108404681 is about 10411.7568642377. The cubic root of 108404681 is about 476.8143807339.

The spelling of 108404681 in words is "one hundred eight million, four hundred four thousand, six hundred eighty-one".

Divisors: 1 7 11 23 77 161 253 1771 61211 428477 673321 1407853 4713247 9854971 15486383 108404681