28849356 has 18 divisors (see below), whose sum is σ = 72924852. Its totient is φ = 9616440.

The previous prime is 28849351. The next prime is 28849367. The reversal of 28849356 is 65394882.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×28849356² = 1664570683229472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28849351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400650 + ... + 400721.

Almost surely, 2^28849356 is an apocalyptic number.

It is an amenable number.

28849356 is an abundant number, since it is smaller than the sum of its proper divisors (44075496).

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

28849356 is a wasteful number, since it uses less digits than its factorization.

28849356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801381 (or 801376 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28849356 is about 5371.1596513230. The cubic root of 28849356 is about 306.6987747310.

The spelling of 28849356 in words is "twenty-eight million, eight hundred forty-nine thousand, three hundred fifty-six".