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130432761 = 347392179
BaseRepresentation
bin1111100011000…
…11111011111001
3100002102200010000
413301203323321
5231342322021
620535343213
73142442304
oct761437371
9302380100
10130432761
1167698078
1237821b09
132103a764
1413473b3b
15b6b6b26
hex7c63ef9

130432761 has 20 divisors (see below), whose sum is σ = 195197200. Its totient is φ = 86797656.

The previous prime is 130432741. The next prime is 130432781. The reversal of 130432761 is 167234031.

It is an interprime number because it is at equal distance from previous prime (130432741) and next prime (130432781).

It is not a de Polignac number, because 130432761 - 29 = 130432249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130432741) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58770 + ... + 60948.

It is an arithmetic number, because the mean of its divisors is an integer number (9759860).

Almost surely, 2130432761 is an apocalyptic number.

It is an amenable number.

130432761 is a deficient number, since it is larger than the sum of its proper divisors (64764439).

130432761 is an equidigital number, since it uses as much as digits as its factorization.

130432761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2921 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 130432761 is about 11420.7163085334. The cubic root of 130432761 is about 507.1412022239.

Adding to 130432761 its reverse (167234031), we get a palindrome (297666792).

The spelling of 130432761 in words is "one hundred thirty million, four hundred thirty-two thousand, seven hundred sixty-one".

Divisors: 1 3 9 27 81 739 2179 2217 6537 6651 19611 19953 58833 59859 176499 1610281 4830843 14492529 43477587 130432761