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52158360 = 23355359139
BaseRepresentation
bin1100011011110…
…1111110011000
310122010220211010
43012331332120
5101323031420
65101533520
71202224122
oct306757630
9118126733
1052158360
1127495391
12155742a0
13aa62947
146cda212
1548a44e0
hex31bdf98

52158360 has 128 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 13318656.

The previous prime is 52158349. The next prime is 52158367. The reversal of 52158360 is 6385125.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52158367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375171 + ... + 375309.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 252158360 is an apocalyptic number.

52158360 is the 4170-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52158360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81648000).

52158360 is an abundant number, since it is smaller than the sum of its proper divisors (111137640).

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

52158360 is a wasteful number, since it uses less digits than its factorization.

52158360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 52158360 is about 7222.0744942156. The cubic root of 52158360 is about 373.6296294365.

The spelling of 52158360 in words is "fifty-two million, one hundred fifty-eight thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 53 59 60 106 118 120 139 159 177 212 236 265 278 295 318 354 417 424 472 530 556 590 636 695 708 795 834 885 1060 1112 1180 1272 1390 1416 1590 1668 1770 2085 2120 2360 2780 3127 3180 3336 3540 4170 5560 6254 6360 7080 7367 8201 8340 9381 12508 14734 15635 16402 16680 18762 22101 24603 25016 29468 31270 32804 36835 37524 41005 44202 46905 49206 58936 62540 65608 73670 75048 82010 88404 93810 98412 110505 123015 125080 147340 164020 176808 187620 196824 221010 246030 294680 328040 375240 434653 442020 492060 869306 884040 984120 1303959 1738612 2173265 2607918 3477224 4346530 5215836 6519795 8693060 10431672 13039590 17386120 26079180 52158360