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23083144638 = 2337103978129
BaseRepresentation
bin10101011111110111…
…001101010110111110
32012120201000020120220
4111133313031112332
5334233241112023
614334303522210
71445010330531
oct253767152676
965521006526
1023083144638
119875919244
1245825b9366
13223b380988
14118d972a18
159017853e3
hex55fdcd5be

23083144638 has 16 divisors (see below), whose sum is σ = 47414027280. Its totient is φ = 7486425216.

The previous prime is 23083144619. The next prime is 23083144661. The reversal of 23083144638 is 83644138032.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23083144638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51988843 + ... + 51989286.

It is an arithmetic number, because the mean of its divisors is an integer number (2963376705).

Almost surely, 223083144638 is an apocalyptic number.

23083144638 is an abundant number, since it is smaller than the sum of its proper divisors (24330882642).

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

23083144638 is a wasteful number, since it uses less digits than its factorization.

23083144638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103978171.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 23083144638 in words is "twenty-three billion, eighty-three million, one hundred forty-four thousand, six hundred thirty-eight".

Divisors: 1 2 3 6 37 74 111 222 103978129 207956258 311934387 623868774 3847190773 7694381546 11541572319 23083144638