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513000000 = 26335619
BaseRepresentation
bin11110100100111…
…100001001000000
31022202022002201000
4132210330021000
52022312000000
6122523212000
715466266552
oct3644741100
91282262630
10513000000
11243636547
12123977000
13823872c6
144c1bb4d2
1530085000
hex1e93c240

513000000 has 392 divisors, whose sum is σ = 1984349600. Its totient is φ = 129600000.

The previous prime is 512999987. The next prime is 513000023. The reversal of 513000000 is 315.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 513000000 = 1003 + 8003 = 4503 + 7503.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 26999991 + ... + 27000009.

Almost surely, 2513000000 is an apocalyptic number.

513000000 is a gapful number since it is divisible by the number (50) 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 513000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992174800).

513000000 is an abundant number, since it is smaller than the sum of its proper divisors (1471349600).

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

513000000 is an frugal number, since it uses more digits than its factorization.

513000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

The square root of 513000000 is about 22649.5033058122. The cubic root of 513000000 is about 800.5204946166.

Adding to 513000000 its reverse (315), we get a palindrome (513000315).

The spelling of 513000000 in words is "five hundred thirteen million", and thus it is an aban number.