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102643476930 = 23251283888919
BaseRepresentation
bin101111110011000000…
…1110010100111000010
3100210221101210212212200
41133212001302213002
53140203212230210
6115053113534030
710262413105221
oct1374601624702
9323841725780
10102643476930
113a592626485
1217a87114316
1398aa395987
144d7a17ccb8
152a0b3570c0
hex17e60729c2

102643476930 has 48 divisors (see below), whose sum is σ = 267081347520. Its totient is φ = 27350229024.

The previous prime is 102643476907. The next prime is 102643476937. The reversal of 102643476930 is 39674346201.

102643476930 is a `hidden beast` number, since 10 + 264 + 347 + 6 + 9 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (102643476937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328990 + ... + 559929.

It is an arithmetic number, because the mean of its divisors is an integer number (5564194740).

Almost surely, 2102643476930 is an apocalyptic number.

102643476930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102643476930 is an abundant number, since it is smaller than the sum of its proper divisors (164437870590).

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

102643476930 is a wasteful number, since it uses less digits than its factorization.

102643476930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890215 (or 890212 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 102643476930 in words is "one hundred two billion, six hundred forty-three million, four hundred seventy-six thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1283 2566 3849 6415 7698 11547 12830 19245 23094 38490 57735 115470 888919 1777838 2666757 4444595 5333514 8000271 8889190 13333785 16000542 26667570 40001355 80002710 1140483077 2280966154 3421449231 5702415385 6842898462 10264347693 11404830770 17107246155 20528695386 34214492310 51321738465 102643476930