28146236 has 6 divisors (see below), whose sum is σ = 49255920. Its totient is φ = 14073116.

The previous prime is 28146229. The next prime is 28146241. The reversal of 28146236 is 63264182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3518276 + ... + 3518283.

It is an arithmetic number, because the mean of its divisors is an integer number (8209320).

Almost surely, 2^28146236 is an apocalyptic number.

It is an amenable number.

28146236 is a deficient number, since it is larger than the sum of its proper divisors (21109684).

28146236 is a wasteful number, since it uses less digits than its factorization.

28146236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036563 (or 7036561 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 28146236 is about 5305.3026303878. The cubic root of 28146236 is about 304.1866207547.

It can be divided in two parts, 28146 and 236, that added together give a palindrome (28382).

The spelling of 28146236 in words is "twenty-eight million, one hundred forty-six thousand, two hundred thirty-six".