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15412149 = 3217100733
BaseRepresentation
bin111010110010…
…101110110101
31002000000111100
4322302232311
512421142044
61310200313
7245000244
oct72625665
932000440
1015412149
118777415
1251b3099
13326811c
14209295b
151546869
hexeb2bb5

15412149 has 12 divisors (see below), whose sum is σ = 23571756. Its totient is φ = 9670272.

The previous prime is 15412147. The next prime is 15412169. The reversal of 15412149 is 94121451.

It can be written as a sum of positive squares in 2 ways, for example, as 9922500 + 5489649 = 3150^2 + 2343^2 .

It is not a de Polignac number, because 15412149 - 21 = 15412147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15412141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50214 + ... + 50519.

It is an arithmetic number, because the mean of its divisors is an integer number (1964313).

Almost surely, 215412149 is an apocalyptic number.

It is an amenable number.

15412149 is a deficient number, since it is larger than the sum of its proper divisors (8159607).

15412149 is a wasteful number, since it uses less digits than its factorization.

15412149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100756 (or 100753 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 15412149 is about 3925.8309948341. The cubic root of 15412149 is about 248.8596005328.

It can be divided in two parts, 15 and 412149, that added together give a square (412164 = 6422).

The spelling of 15412149 in words is "fifteen million, four hundred twelve thousand, one hundred forty-nine".

Divisors: 1 3 9 17 51 153 100733 302199 906597 1712461 5137383 15412149