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130244620 = 225111931159
BaseRepresentation
bin1111100001101…
…10000000001100
3100002002010000211
413300312000030
5231320311440
620531332204
73141026632
oct760660014
9302063024
10130244620
1167579790
1237751064
1320ca2c2c
1413425352
15b67aeea
hex7c3600c

130244620 has 48 divisors (see below), whose sum is σ = 314092800. Its totient is φ = 44867520.

The previous prime is 130244617. The next prime is 130244627. The reversal of 130244620 is 26442031.

It is a happy number.

It is a super-2 number, since 2×1302446202 = 33927322077888800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 130244591 and 130244600.

It is not an unprimeable number, because it can be changed into a prime (130244627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11400 + ... + 19759.

It is an arithmetic number, because the mean of its divisors is an integer number (6543600).

Almost surely, 2130244620 is an apocalyptic number.

130244620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130244620 is an abundant number, since it is smaller than the sum of its proper divisors (183848180).

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

130244620 is a wasteful number, since it uses less digits than its factorization.

130244620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31198 (or 31196 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 130244620 is about 11412.4765059999. The cubic root of 130244620 is about 506.8972451965.

Adding to 130244620 its reverse (26442031), we get a palindrome (156686651).

The spelling of 130244620 in words is "one hundred thirty million, two hundred forty-four thousand, six hundred twenty".

Divisors: 1 2 4 5 10 11 19 20 22 38 44 55 76 95 110 190 209 220 380 418 836 1045 2090 4180 31159 62318 124636 155795 311590 342749 592021 623180 685498 1184042 1370996 1713745 2368084 2960105 3427490 5920210 6512231 6854980 11840420 13024462 26048924 32561155 65122310 130244620