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130440230 = 25103126641
BaseRepresentation
bin1111100011001…
…01110000100110
3100002110001100122
413301211300212
5231343041410
620535441542
73142503134
oct761456046
9302401318
10130440230
11676a2748
12378262b2
1321040c8b
1413476754
15b6b8e55
hex7c65c26

130440230 has 16 divisors (see below), whose sum is σ = 237073824. Its totient is φ = 51669120.

The previous prime is 130440221. The next prime is 130440239. The reversal of 130440230 is 32044031.

It is an interprime number because it is at equal distance from previous prime (130440221) and next prime (130440239).

It is a junction number, because it is equal to n+sod(n) for n = 130440199 and 130440208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62291 + ... + 64350.

It is an arithmetic number, because the mean of its divisors is an integer number (14817114).

Almost surely, 2130440230 is an apocalyptic number.

130440230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130440230 is a deficient number, since it is larger than the sum of its proper divisors (106633594).

130440230 is a wasteful number, since it uses less digits than its factorization.

130440230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126751.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 130440230 is about 11421.0432973525. The cubic root of 130440230 is about 507.1508822187.

Adding to 130440230 its reverse (32044031), we get a palindrome (162484261).

The spelling of 130440230 in words is "one hundred thirty million, four hundred forty thousand, two hundred thirty".

Divisors: 1 2 5 10 103 206 515 1030 126641 253282 633205 1266410 13044023 26088046 65220115 130440230