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130332461 = 718618923
BaseRepresentation
bin1111100010010…
…11011100101101
3100002020120112012
413301023130231
5231331114321
620533251005
73141544010
oct761133455
9302216465
10130332461
1167629786
1237793a65
1321003bcc
1413449377
15b69705b
hex7c4b72d

130332461 has 4 divisors (see below), whose sum is σ = 148951392. Its totient is φ = 111713532.

The previous prime is 130332439. The next prime is 130332469. The reversal of 130332461 is 164233031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 130332461 - 210 = 130331437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130332469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9309455 + ... + 9309468.

It is an arithmetic number, because the mean of its divisors is an integer number (37237848).

Almost surely, 2130332461 is an apocalyptic number.

It is an amenable number.

130332461 is a deficient number, since it is larger than the sum of its proper divisors (18618931).

130332461 is an equidigital number, since it uses as much as digits as its factorization.

130332461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18618930.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 130332461 is about 11416.3243209012. The cubic root of 130332461 is about 507.0111753142.

Adding to 130332461 its reverse (164233031), we get a palindrome (294565492).

The spelling of 130332461 in words is "one hundred thirty million, three hundred thirty-two thousand, four hundred sixty-one".

Divisors: 1 7 18618923 130332461