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512642052 = 2232131576977
BaseRepresentation
bin11110100011100…
…100110000000100
31022201121220200200
4132203210300010
52022214021202
6122511410500
715463246146
oct3643446004
91281556620
10512642052
1124341161a
12123823a30
13822903c0
144c126c96
1530013e1c
hex1e8e4c04

512642052 has 72 divisors (see below), whose sum is σ = 1404615576. Its totient is φ = 156708864.

The previous prime is 512642033. The next prime is 512642057. The reversal of 512642052 is 250246215.

512642052 is a `hidden beast` number, since 5 + 12 + 642 + 0 + 5 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2604996 + 510037056 = 1614^2 + 22584^2 .

It is not an unprimeable number, because it can be changed into a prime (512642057) 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, 69988 + ... + 76964.

Almost surely, 2512642052 is an apocalyptic number.

512642052 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 512642052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702307788).

512642052 is an abundant number, since it is smaller than the sum of its proper divisors (891973524).

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

512642052 is a wasteful number, since it uses less digits than its factorization.

512642052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157 (or 7152 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 512642052 is about 22641.6000317999. The cubic root of 512642052 is about 800.3342623997.

Adding to 512642052 its reverse (250246215), we get a palindrome (762888267).

The spelling of 512642052 in words is "five hundred twelve million, six hundred forty-two thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 157 234 314 468 471 628 942 1413 1884 2041 2826 4082 5652 6123 6977 8164 12246 13954 18369 20931 24492 27908 36738 41862 62793 73476 83724 90701 125586 181402 251172 272103 362804 544206 816309 1088412 1095389 1632618 2190778 3265236 3286167 4381556 6572334 9858501 13144668 14240057 19717002 28480114 39434004 42720171 56960228 85440342 128160513 170880684 256321026 512642052