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520000572 = 2237133115361
BaseRepresentation
bin11110111111101…
…001010000111100
31100020110202200110
4132333221100330
52031110004242
6123333230020
715612634440
oct3677512074
91306422613
10520000572
11247588143
12126192310
1383968860
144d0c0820
15309b939c
hex1efe943c

520000572 has 96 divisors (see below), whose sum is σ = 1541607424. Its totient is φ = 132710400.

The previous prime is 520000513. The next prime is 520000643. The reversal of 520000572 is 275000025.

It is a Harshad number since it is a multiple of its sum of digits (21).

520000572 is a modest number, since divided by 572 gives 520 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26172 + ... + 41532.

Almost surely, 2520000572 is an apocalyptic number.

520000572 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520000572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770803712).

520000572 is an abundant number, since it is smaller than the sum of its proper divisors (1021606852).

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

520000572 is a wasteful number, since it uses less digits than its factorization.

520000572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419 (or 15417 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 520000572 is about 22803.5210439090. The cubic root of 520000572 is about 804.1454465709.

Adding to 520000572 its reverse (275000025), we get a palindrome (795000597).

The spelling of 520000572 in words is "five hundred twenty million, five hundred seventy-two", and thus it is an aban number.

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 31 39 42 52 62 78 84 91 93 124 156 182 186 217 273 364 372 403 434 546 651 806 868 1092 1209 1302 1612 2418 2604 2821 4836 5642 8463 11284 15361 16926 30722 33852 46083 61444 92166 107527 184332 199693 215054 322581 399386 430108 476191 599079 645162 798772 952382 1198158 1290324 1397851 1428573 1904764 2396316 2795702 2857146 3333337 4193553 5591404 5714292 6190483 6666674 8387106 10000011 12380966 13333348 16774212 18571449 20000022 24761932 37142898 40000044 43333381 74285796 86666762 130000143 173333524 260000286 520000572