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23180884140 = 22351722726357
BaseRepresentation
bin10101100101101100…
…000011100010101100
32012211111220220222110
4111211230003202230
5334433301243030
614352114444020
71450305156411
oct254554034254
965744826873
1023180884140
119916006397
1245ab293610
1322556b25bb
14119c936108
1590a1401b0
hex565b038ac

23180884140 has 48 divisors (see below), whose sum is σ = 68724506592. Its totient is φ = 5817947136.

The previous prime is 23180884079. The next prime is 23180884141. The reversal of 23180884140 is 4148808132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23180884141) 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, 11362159 + ... + 11364198.

It is an arithmetic number, because the mean of its divisors is an integer number (1431760554).

Almost surely, 223180884140 is an apocalyptic number.

23180884140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23180884140 is an abundant number, since it is smaller than the sum of its proper divisors (45543622452).

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

23180884140 is a wasteful number, since it uses less digits than its factorization.

23180884140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22726386 (or 22726384 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 23180884140 in words is "twenty-three billion, one hundred eighty million, eight hundred eighty-four thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 22726357 45452714 68179071 90905428 113631785 136358142 227263570 272716284 340895355 386348069 454527140 681790710 772696138 1159044207 1363581420 1545392276 1931740345 2318088414 3863480690 4636176828 5795221035 7726961380 11590442070 23180884140