28146136 has 32 divisors (see below), whose sum is σ = 53887680. Its totient is φ = 13780000.

The previous prime is 28146119. The next prime is 28146179. The reversal of 28146136 is 63164182.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28146098 and 28146107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112011 + ... + 112261.

It is an arithmetic number, because the mean of its divisors is an integer number (1683990).

Almost surely, 2^28146136 is an apocalyptic number.

It is an amenable number.

28146136 is a deficient number, since it is larger than the sum of its proper divisors (25741544).

28146136 is a wasteful number, since it uses less digits than its factorization.

28146136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 491 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 28146136 is about 5305.2932058464. The cubic root of 28146136 is about 304.1862605088.

It can be divided in two parts, 28146 and 136, that added together give a palindrome (28282).

The spelling of 28146136 in words is "twenty-eight million, one hundred forty-six thousand, one hundred thirty-six".