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52426660 = 225111323797
BaseRepresentation
bin1100011111111…
…1011110100100
310122122112212011
43013333132210
5101410123120
65111404004
71204422256
oct307773644
9118575764
1052426660
1127658a20
1215683604
13ab27ac0
146d69cd6
154908c5a
hex31ff7a4

52426660 has 96 divisors (see below), whose sum is σ = 135136512. Its totient is φ = 16811520.

The previous prime is 52426651. The next prime is 52426663. The reversal of 52426660 is 6662425.

It is not an unprimeable number, because it can be changed into a prime (52426663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65382 + ... + 66178.

It is an arithmetic number, because the mean of its divisors is an integer number (1407672).

Almost surely, 252426660 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 52426660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67568256).

52426660 is an abundant number, since it is smaller than the sum of its proper divisors (82709852).

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

52426660 is a wasteful number, since it uses less digits than its factorization.

52426660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 52426660 is about 7240.6256635736. The cubic root of 52426660 is about 374.2691781385.

The spelling of 52426660 in words is "fifty-two million, four hundred twenty-six thousand, six hundred sixty".

Divisors: 1 2 4 5 10 11 13 20 22 23 26 44 46 52 55 65 92 110 115 130 143 220 230 253 260 286 299 460 506 572 598 715 797 1012 1196 1265 1430 1495 1594 2530 2860 2990 3188 3289 3985 5060 5980 6578 7970 8767 10361 13156 15940 16445 17534 18331 20722 32890 35068 36662 41444 43835 51805 65780 73324 87670 91655 103610 113971 175340 183310 201641 207220 227942 238303 366620 403282 455884 476606 569855 806564 953212 1008205 1139710 1191515 2016410 2279420 2383030 2621333 4032820 4766060 5242666 10485332 13106665 26213330 52426660