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130004478 = 232157179257
BaseRepresentation
bin1111011111110…
…11010111111110
3100001121220121200
413233323113332
5231240120403
620522240330
73136006542
oct757732776
9301556550
10130004478
116742531a
12376560a6
1320c1a836
14133a1a22
15b62eca3
hex7bfb5fe

130004478 has 48 divisors (see below), whose sum is σ = 286163280. Its totient is φ = 42651648.

The previous prime is 130004467. The next prime is 130004503. The reversal of 130004478 is 874400031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505726 + ... + 505982.

It is an arithmetic number, because the mean of its divisors is an integer number (5961735).

Almost surely, 2130004478 is an apocalyptic number.

130004478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130004478 is an abundant number, since it is smaller than the sum of its proper divisors (156158802).

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

130004478 is a wasteful number, since it uses less digits than its factorization.

130004478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 130004478 is about 11401.9506225909. The cubic root of 130004478 is about 506.5855184174.

The spelling of 130004478 in words is "one hundred thirty million, four thousand, four hundred seventy-eight".

Divisors: 1 2 3 6 9 18 157 179 257 314 358 471 514 537 771 942 1074 1413 1542 1611 2313 2826 3222 4626 28103 40349 46003 56206 80698 84309 92006 121047 138009 168618 242094 252927 276018 363141 414027 505854 726282 828054 7222471 14444942 21667413 43334826 65002239 130004478