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2257024638 = 2311231486841
BaseRepresentation
bin1000011010000111…
…0111011001111110
312211021222201202010
42012201313121332
514110244242023
61011543512050
7106634251521
oct20641673176
95737881663
102257024638
11a59039020
1252ba58626
1329c7a924b
14175a82bb8
15d3233093
hex8687767e

2257024638 has 32 divisors (see below), whose sum is σ = 5138525952. Its totient is φ = 654209600.

The previous prime is 2257024631. The next prime is 2257024639. The reversal of 2257024638 is 8364207522.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2257024596 and 2257024605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257024631) 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, 741903 + ... + 744938.

It is an arithmetic number, because the mean of its divisors is an integer number (160578936).

Almost surely, 22257024638 is an apocalyptic number.

2257024638 is an abundant number, since it is smaller than the sum of its proper divisors (2881501314).

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

2257024638 is a wasteful number, since it uses less digits than its factorization.

2257024638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486880.

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 2257024638 is about 47508.1533844455. The cubic root of 2257024638 is about 1311.7329662858.

The spelling of 2257024638 in words is "two billion, two hundred fifty-seven million, twenty-four thousand, six hundred thirty-eight".

Divisors: 1 2 3 6 11 22 23 33 46 66 69 138 253 506 759 1518 1486841 2973682 4460523 8921046 16355251 32710502 34197343 49065753 68394686 98131506 102592029 205184058 376170773 752341546 1128512319 2257024638