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180130830 = 235111928729
BaseRepresentation
bin10101011110010…
…01010000001110
3110112221121001020
422233021100032
5332103141310
625512455010
74315041525
oct1257112016
9415847036
10180130830
1192751a60
12503aa466
132b41b5b9
1419ccd4bc
1510c32170
hexabc940e

180130830 has 64 divisors (see below), whose sum is σ = 496454400. Its totient is φ = 41368320.

The previous prime is 180130817. The next prime is 180130859. The reversal of 180130830 is 38031081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180130830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8095 + ... + 20634.

It is an arithmetic number, because the mean of its divisors is an integer number (7757100).

Almost surely, 2180130830 is an apocalyptic number.

180130830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180130830 is an abundant number, since it is smaller than the sum of its proper divisors (316323570).

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

180130830 is a wasteful number, since it uses less digits than its factorization.

180130830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28769.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 180130830 is about 13421.2827255818. The cubic root of 180130830 is about 564.7583794703.

The spelling of 180130830 in words is "one hundred eighty million, one hundred thirty thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 19 22 30 33 38 55 57 66 95 110 114 165 190 209 285 330 418 570 627 1045 1254 2090 3135 6270 28729 57458 86187 143645 172374 287290 316019 430935 545851 632038 861870 948057 1091702 1580095 1637553 1896114 2729255 3160190 3275106 4740285 5458510 6004361 8187765 9480570 12008722 16375530 18013083 30021805 36026166 60043610 90065415 180130830