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130445886 = 23297110559
BaseRepresentation
bin1111100011001…
…11001000111110
3100002110100010010
413301213020332
5231343232021
620535524050
73142525464
oct761471076
9302410103
10130445886
11676a6a1a
1237829626
132104371c
1413478834
15b6ba976
hex7c6723e

130445886 has 32 divisors (see below), whose sum is σ = 273715200. Its totient is φ = 41387360.

The previous prime is 130445867. The next prime is 130445899. The reversal of 130445886 is 688544031.

It is a super-2 number, since 2×1304458862 = 34032258348649992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7075 + ... + 17633.

It is an arithmetic number, because the mean of its divisors is an integer number (8553600).

Almost surely, 2130445886 is an apocalyptic number.

130445886 is an abundant number, since it is smaller than the sum of its proper divisors (143269314).

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

130445886 is a wasteful number, since it uses less digits than its factorization.

130445886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 130445886 is about 11421.2909077740. The cubic root of 130445886 is about 507.1582122782.

The spelling of 130445886 in words is "one hundred thirty million, four hundred forty-five thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 29 58 71 87 142 174 213 426 2059 4118 6177 10559 12354 21118 31677 63354 306211 612422 749689 918633 1499378 1837266 2249067 4498134 21740981 43481962 65222943 130445886