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102544254 = 23219439683
BaseRepresentation
bin1100001110010…
…11001101111110
321010221210021100
412013023031332
5202222404004
614101513530
72353416561
oct607131576
9233853240
10102544254
115297a01a
122a4128a6
1318324897
14d8944d8
159008739
hex61cb37e

102544254 has 48 divisors (see below), whose sum is σ = 234748800. Its totient is φ = 32261328.

The previous prime is 102544243. The next prime is 102544297. The reversal of 102544254 is 452445201.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149797 + ... + 150479.

It is an arithmetic number, because the mean of its divisors is an integer number (4890600).

Almost surely, 2102544254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102544254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117374400).

102544254 is an abundant number, since it is smaller than the sum of its proper divisors (132204546).

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

102544254 is a wasteful number, since it uses less digits than its factorization.

102544254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 102544254 is about 10126.4136790870. The cubic root of 102544254 is about 468.0624231878.

Adding to 102544254 its reverse (452445201), we get a palindrome (554989455).

The spelling of 102544254 in words is "one hundred two million, five hundred forty-four thousand, two hundred fifty-four".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 439 683 878 1317 1366 2049 2634 3951 4098 6147 7902 8341 12294 12977 16682 25023 25954 38931 50046 75069 77862 116793 150138 233586 299837 599674 899511 1799022 2698533 5397066 5696903 11393806 17090709 34181418 51272127 102544254