Search a number
-
+
130786512 = 2432724719
BaseRepresentation
bin1111100101110…
…10010011010000
3100010002122100220
413302322103100
5231440132022
620551113040
73145444533
oct762722320
9303078326
10130786512
116790992a
1237972780
132113278c
1413526a1a
15b73685c
hex7cba4d0

130786512 has 20 divisors (see below), whose sum is σ = 337865280. Its totient is φ = 43595488.

The previous prime is 130786511. The next prime is 130786517. The reversal of 130786512 is 215687031.

It is a super-2 number, since 2×1307865122 = 34210223442252288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130786511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362312 + ... + 1362407.

It is an arithmetic number, because the mean of its divisors is an integer number (16893264).

Almost surely, 2130786512 is an apocalyptic number.

130786512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130786512 is an abundant number, since it is smaller than the sum of its proper divisors (207078768).

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

130786512 is a wasteful number, since it uses less digits than its factorization.

130786512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724730 (or 2724724 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 130786512 is about 11436.1930728718. The cubic root of 130786512 is about 507.5992664988.

The spelling of 130786512 in words is "one hundred thirty million, seven hundred eighty-six thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 48 2724719 5449438 8174157 10898876 16348314 21797752 32696628 43595504 65393256 130786512