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130278372 = 22375997271
BaseRepresentation
bin1111100001111…
…10001111100100
3100002010211022220
413300332033210
5231322401442
620532152340
73141230220
oct760761744
9302124286
10130278372
11675a2084
12377686b0
1320cb53c3
1413433780
15b685eec
hex7c3e3e4

130278372 has 96 divisors (see below), whose sum is σ = 358256640. Its totient is φ = 36080640.

The previous prime is 130278367. The next prime is 130278373. The reversal of 130278372 is 273872031.

It is not an unprimeable number, because it can be changed into a prime (130278373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480597 + ... + 480867.

It is an arithmetic number, because the mean of its divisors is an integer number (3731840).

Almost surely, 2130278372 is an apocalyptic number.

130278372 is a gapful number since it is divisible by the number (12) 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 130278372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179128320).

130278372 is an abundant number, since it is smaller than the sum of its proper divisors (227978268).

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

130278372 is a wasteful number, since it uses less digits than its factorization.

130278372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 130278372 is about 11413.9551427189. The cubic root of 130278372 is about 506.9410277296.

The spelling of 130278372 in words is "one hundred thirty million, two hundred seventy-eight thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 59 84 97 118 177 194 236 271 291 354 388 413 542 582 679 708 813 826 1084 1164 1239 1358 1626 1652 1897 2037 2478 2716 3252 3794 4074 4956 5691 5723 7588 8148 11382 11446 15989 17169 22764 22892 26287 31978 34338 40061 47967 52574 63956 68676 78861 80122 95934 105148 111923 120183 157722 160244 184009 191868 223846 240366 315444 335769 368018 447692 480732 552027 671538 736036 1104054 1343076 1550933 2208108 3101866 4652799 6203732 9305598 10856531 18611196 21713062 32569593 43426124 65139186 130278372