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130404309 = 376209729
BaseRepresentation
bin1111100010111…
…00111111010101
3100002101020002020
413301130333111
5231340414214
620535003353
73142263330
oct761347725
9302336066
10130404309
1167678762
1237809559
132102a819
1413467617
15b6ad4a9
hex7c5cfd5

130404309 has 8 divisors (see below), whose sum is σ = 198711360. Its totient is φ = 74516736.

The previous prime is 130404301. The next prime is 130404341. The reversal of 130404309 is 903404031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130404309 - 23 = 130404301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130404301) 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, 3104844 + ... + 3104885.

It is an arithmetic number, because the mean of its divisors is an integer number (24838920).

Almost surely, 2130404309 is an apocalyptic number.

It is an amenable number.

130404309 is a deficient number, since it is larger than the sum of its proper divisors (68307051).

130404309 is an equidigital number, since it uses as much as digits as its factorization.

130404309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209739.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 130404309 is about 11419.4706094460. The cubic root of 130404309 is about 507.1043243959.

The spelling of 130404309 in words is "one hundred thirty million, four hundred four thousand, three hundred nine".

Divisors: 1 3 7 21 6209729 18629187 43468103 130404309