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102831950 = 25213281563
BaseRepresentation
bin1100010000100…
…01011101001110
321011111101220202
412020101131032
5202311110300
614112013502
72356025414
oct610213516
9234441822
10102831950
1153056191
122a531292
13183c5810
14d92b2b4
159063ad5
hex621174e

102831950 has 48 divisors (see below), whose sum is σ = 207080496. Its totient is φ = 37766400.

The previous prime is 102831907. The next prime is 102831959. The reversal of 102831950 is 59138201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102831959) 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, 182369 + ... + 182931.

It is an arithmetic number, because the mean of its divisors is an integer number (4314177).

Almost surely, 2102831950 is an apocalyptic number.

102831950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102831950 is an abundant number, since it is smaller than the sum of its proper divisors (104248546).

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

102831950 is a wasteful number, since it uses less digits than its factorization.

102831950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 102831950 is about 10140.6089560736. The cubic root of 102831950 is about 468.4997431571.

The spelling of 102831950 in words is "one hundred two million, eight hundred thirty-one thousand, nine hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 281 325 562 563 650 1126 1405 2810 2815 3653 5630 7025 7306 7319 14050 14075 14638 18265 28150 36530 36595 73190 91325 158203 182650 182975 316406 365950 791015 1582030 2056639 3955075 4113278 7910150 10283195 20566390 51415975 102831950