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130123290 = 235112913597
BaseRepresentation
bin1111100000110…
…00011000011010
3100001211221121010
413300120120122
5231302421130
620524554350
73140013123
oct760303032
9301757533
10130123290
11674a6610
12376b29b6
1320c5c93b
14133d304a
15b6550b0
hex7c1861a

130123290 has 64 divisors (see below), whose sum is σ = 352460160. Its totient is φ = 30455040.

The previous prime is 130123271. The next prime is 130123291. The reversal of 130123290 is 92321031.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (130123291) 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, 2772 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (5507190).

Almost surely, 2130123290 is an apocalyptic number.

130123290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 130123290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176230080).

130123290 is an abundant number, since it is smaller than the sum of its proper divisors (222336870).

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

130123290 is a wasteful number, since it uses less digits than its factorization.

130123290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13647.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 130123290 is about 11407.1595938691. The cubic root of 130123290 is about 506.7397954426.

The spelling of 130123290 in words is "one hundred thirty million, one hundred twenty-three thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 29 30 33 55 58 66 87 110 145 165 174 290 319 330 435 638 870 957 1595 1914 3190 4785 9570 13597 27194 40791 67985 81582 135970 149567 203955 299134 394313 407910 448701 747835 788626 897402 1182939 1495670 1971565 2243505 2365878 3943130 4337443 4487010 5914695 8674886 11829390 13012329 21687215 26024658 43374430 65061645 130123290