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15000129 = 3212912
BaseRepresentation
bin111001001110…
…001001000001
31001020002022100
4321032021001
512320001004
61253301013
7241333104
oct71161101
931202270
1015000129
118515901
125034769
133152721
141dc673b
1514b4739
hexe4e241

15000129 has 9 divisors (see below), whose sum is σ = 21683649. Its totient is φ = 9992340.

The previous prime is 15000127. The next prime is 15000131. The reversal of 15000129 is 92100051.

The square root of 15000129 is 3873.

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

It is an interprime number because it is at equal distance from previous prime (15000127) and next prime (15000131).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 15000129 - 21 = 15000127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15000127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10974 + ... + 12264.

Almost surely, 215000129 is an apocalyptic number.

15000129 is the 3873-rd square number.

15000129 is the 1937-th centered octagonal number.

It is an amenable number.

15000129 is a deficient number, since it is larger than the sum of its proper divisors (6683520).

15000129 is an frugal number, since it uses more digits than its factorization.

15000129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The cubic root of 15000129 is about 246.6219144118.

It can be divided in two parts, 15000 and 129, that added together give a square (15129 = 1232).

The spelling of 15000129 in words is "fifteen million, one hundred twenty-nine", and thus it is an aban number.

Divisors: 1 3 9 1291 3873 11619 1666681 5000043 15000129