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12128202 = 2325312713
BaseRepresentation
bin101110010000…
…111111001010
3211211011202200
4232100333022
511101100302
61111541030
7205042122
oct56207712
924734680
1012128202
116934109
12408a776
132688468
141879c82
1510e881c
hexb90fca

12128202 has 24 divisors (see below), whose sum is σ = 26775684. Its totient is φ = 3966144.

The previous prime is 12128189. The next prime is 12128219. The reversal of 12128202 is 20282121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10361961 + 1766241 = 3219^2 + 1329^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5403 + ... + 7310.

Almost surely, 212128202 is an apocalyptic number.

12128202 is an abundant number, since it is smaller than the sum of its proper divisors (14647482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12128202 is a wasteful number, since it uses less digits than its factorization.

12128202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774 (or 12771 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12128202 is about 3482.5568193498. The cubic root of 12128202 is about 229.7552658301.

The spelling of 12128202 in words is "twelve million, one hundred twenty-eight thousand, two hundred two".

Divisors: 1 2 3 6 9 18 53 106 159 318 477 954 12713 25426 38139 76278 114417 228834 673789 1347578 2021367 4042734 6064101 12128202