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52131960 = 23325179809
BaseRepresentation
bin1100011011011…
…1100001111000
310122002120121100
43012313201320
5101321210320
65101211400
71202054136
oct306674170
9118076540
1052131960
1127477571
1215560b60
13aa5391a
146cd0756
15489b790
hex31b7878

52131960 has 96 divisors (see below), whose sum is σ = 170586000. Its totient is φ = 13807104.

The previous prime is 52131949. The next prime is 52131967. The reversal of 52131960 is 6913125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52131967) 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, 64036 + ... + 64844.

Almost surely, 252131960 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 52131960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85293000).

52131960 is an abundant number, since it is smaller than the sum of its proper divisors (118454040).

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

52131960 is a wasteful number, since it uses less digits than its factorization.

52131960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 52131960 is about 7220.2465331871. The cubic root of 52131960 is about 373.5665811423.

The spelling of 52131960 in words is "fifty-two million, one hundred thirty-one thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 179 180 358 360 537 716 809 895 1074 1432 1611 1618 1790 2148 2427 2685 3222 3236 3580 4045 4296 4854 5370 6444 6472 7160 7281 8055 8090 9708 10740 12135 12888 14562 16110 16180 19416 21480 24270 29124 32220 32360 36405 48540 58248 64440 72810 97080 144811 145620 289622 291240 434433 579244 724055 868866 1158488 1303299 1448110 1737732 2172165 2606598 2896220 3475464 4344330 5213196 5792440 6516495 8688660 10426392 13032990 17377320 26065980 52131960