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130280494 = 265140247
BaseRepresentation
bin1111100001111…
…10110000101110
3100002010221020111
413300332300232
5231322433434
620532210234
73141236341
oct760766056
9302127214
10130280494
11675a3733
123776997a
1320cb6366
1413434458
15b686964
hex7c3ec2e

130280494 has 4 divisors (see below), whose sum is σ = 195420744. Its totient is φ = 65140246.

The previous prime is 130280483. The next prime is 130280593. The reversal of 130280494 is 494082031.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32570122 + ... + 32570125.

It is an arithmetic number, because the mean of its divisors is an integer number (48855186).

Almost surely, 2130280494 is an apocalyptic number.

130280494 is a deficient number, since it is larger than the sum of its proper divisors (65140250).

130280494 is an equidigital number, since it uses as much as digits as its factorization.

130280494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65140249.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 130280494 is about 11414.0480987247. The cubic root of 130280494 is about 506.9437801000.

It can be divided in two parts, 1302 and 80494, that added together give a square (81796 = 2862).

The spelling of 130280494 in words is "one hundred thirty million, two hundred eighty thousand, four hundred ninety-four".

Divisors: 1 2 65140247 130280494