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130347889 = 742332
BaseRepresentation
bin1111100010011…
…11001101110001
3100002021100200121
413301033031301
5231332113024
620533450241
73141640000
oct761171561
9302240617
10130347889
116763a331
12377a0981
132100ac39
1413450c37
15b69b8e4
hex7c4f371

130347889 has 15 divisors (see below), whose sum is σ = 152718923. Its totient is φ = 111247248.

The previous prime is 130347883. The next prime is 130347907. The reversal of 130347889 is 988743031.

It is a happy number.

The square root of 130347889 is 11417.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 103876864 = 5145^2 + 10192^2 .

It is not a de Polignac number, because 130347889 - 215 = 130315121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130347883) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 559317 + ... + 559549.

Almost surely, 2130347889 is an apocalyptic number.

130347889 is the 11417-th square number.

130347889 is the 5709-th centered octagonal number.

It is an amenable number.

130347889 is a deficient number, since it is larger than the sum of its proper divisors (22371034).

130347889 is an frugal number, since it uses more digits than its factorization.

130347889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The cubic root of 130347889 is about 507.0311802046.

The spelling of 130347889 in words is "one hundred thirty million, three hundred forty-seven thousand, eight hundred eighty-nine".

Divisors: 1 7 49 233 343 1631 2401 11417 54289 79919 380023 559433 2660161 18621127 130347889