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52949988 = 223272132309
BaseRepresentation
bin1100100111111…
…1001111100100
310200122010201200
43021333033210
5102023344423
65130522500
71212032100
oct311771744
9120563650
1052949988
1127986123
1215896430
13ac7c070
147064900
1549add43
hex327f3e4

52949988 has 108 divisors (see below), whose sum is σ = 167747580. Its totient is φ = 13958784.

The previous prime is 52949971. The next prime is 52949989. The reversal of 52949988 is 88994925.

It can be written as a sum of positive squares in 2 ways, for example, as 25826724 + 27123264 = 5082^2 + 5208^2 .

It is not an unprimeable number, because it can be changed into a prime (52949989) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21778 + ... + 24086.

Almost surely, 252949988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52949988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83873790).

52949988 is an abundant number, since it is smaller than the sum of its proper divisors (114797592).

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

52949988 is a wasteful number, since it uses less digits than its factorization.

52949988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2334 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 52949988 is about 7276.6742403381. The cubic root of 52949988 is about 375.5103876966.

The spelling of 52949988 in words is "fifty-two million, nine hundred forty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 49 52 63 78 84 91 98 117 126 147 156 182 196 234 252 273 294 364 441 468 546 588 637 819 882 1092 1274 1638 1764 1911 2309 2548 3276 3822 4618 5733 6927 7644 9236 11466 13854 16163 20781 22932 27708 30017 32326 41562 48489 60034 64652 83124 90051 96978 113141 120068 145467 180102 193956 210119 226282 270153 290934 339423 360204 420238 452564 540306 581868 630357 678846 840476 1018269 1080612 1260714 1357692 1470833 1891071 2036538 2521428 2941666 3782142 4073076 4412499 5883332 7564284 8824998 13237497 17649996 26474994 52949988