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130394782 = 2721330559
BaseRepresentation
bin1111100010110…
…10101010011110
3100002100202000101
413301122222132
5231340113112
620534451314
73142223500
oct761325236
9302322011
10130394782
1167671591
1237803b3a
132102639b
1413463d70
15b6aa757
hex7c5aa9e

130394782 has 12 divisors (see below), whose sum is σ = 227525760. Its totient is φ = 55883436.

The previous prime is 130394749. The next prime is 130394783. The reversal of 130394782 is 287493031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130394783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665182 + ... + 665377.

It is an arithmetic number, because the mean of its divisors is an integer number (18960480).

Almost surely, 2130394782 is an apocalyptic number.

130394782 is a deficient number, since it is larger than the sum of its proper divisors (97130978).

130394782 is a wasteful number, since it uses less digits than its factorization.

130394782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330575 (or 1330568 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 130394782 is about 11419.0534634005. The cubic root of 130394782 is about 507.0919748537.

The spelling of 130394782 in words is "one hundred thirty million, three hundred ninety-four thousand, seven hundred eighty-two".

Divisors: 1 2 7 14 49 98 1330559 2661118 9313913 18627826 65197391 130394782