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23203109982 = 2313431787877
BaseRepresentation
bin10101100111000000…
…110101110001011110
32012220001202010002210
4111213000311301132
5340004444004412
614354231101250
71450665115653
oct254700656136
965801663083
1023203109982
119927606a58
1245b6811826
13225a194ba0
1411a187dc2a
1590c08083c
hex567035c5e

23203109982 has 64 divisors (see below), whose sum is σ = 50212721664. Its totient is φ = 7105691520.

The previous prime is 23203109981. The next prime is 23203109983. The reversal of 23203109982 is 28990130232.

It is an interprime number because it is at equal distance from previous prime (23203109981) and next prime (23203109983).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 23203109982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203109981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26456928 + ... + 26457804.

It is an arithmetic number, because the mean of its divisors is an integer number (784573776).

Almost surely, 223203109982 is an apocalyptic number.

23203109982 is an abundant number, since it is smaller than the sum of its proper divisors (27009611682).

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

23203109982 is a wasteful number, since it uses less digits than its factorization.

23203109982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 23203109982 in words is "twenty-three billion, two hundred three million, one hundred nine thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 13 26 39 78 431 787 862 877 1293 1574 1754 2361 2586 2631 4722 5262 5603 10231 11206 11401 16809 20462 22802 30693 33618 34203 61386 68406 339197 377987 678394 690199 755974 1017591 1133961 1380398 2035182 2070597 2267922 4141194 4409561 4913831 8819122 8972587 9827662 13228683 14741493 17945174 26457366 26917761 29482986 53835522 297475769 594951538 892427307 1784854614 3867184997 7734369994 11601554991 23203109982