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130234788 = 22324384131
BaseRepresentation
bin1111100001100…
…11100110100100
3100002001121112200
413300303212210
5231320003123
620531214500
73140656155
oct760634644
9302047480
10130234788
1167572362
1237747430
1320c9b608
141342192c
15b678143
hex7c339a4

130234788 has 36 divisors (see below), whose sum is σ = 336864528. Its totient is φ = 42401520.

The previous prime is 130234781. The next prime is 130234823. The reversal of 130234788 is 887432031.

130234788 is a `hidden beast` number, since 1 + 302 + 347 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1302347882 = 33922200010809888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (130234781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40518 + ... + 43613.

It is an arithmetic number, because the mean of its divisors is an integer number (9357348).

Almost surely, 2130234788 is an apocalyptic number.

130234788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

130234788 is an abundant number, since it is smaller than the sum of its proper divisors (206629740).

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

130234788 is a wasteful number, since it uses less digits than its factorization.

130234788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84184 (or 84179 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 130234788 is about 11412.0457412333. The cubic root of 130234788 is about 506.8844898670.

The spelling of 130234788 in words is "one hundred thirty million, two hundred thirty-four thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 43 86 129 172 258 387 516 774 1548 84131 168262 252393 336524 504786 757179 1009572 1514358 3028716 3617633 7235266 10852899 14470532 21705798 32558697 43411596 65117394 130234788