28896132 has 12 divisors (see below), whose sum is σ = 67424336. Its totient is φ = 9632040.

The previous prime is 28896121. The next prime is 28896137. The reversal of 28896132 is 23169882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×28896132² = 1669972889122848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28896137) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1203994 + ... + 1204017.

Almost surely, 2^28896132 is an apocalyptic number.

It is an amenable number.

28896132 is an abundant number, since it is smaller than the sum of its proper divisors (38528204).

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

28896132 is a wasteful number, since it uses less digits than its factorization.

28896132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408018 (or 2408016 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 28896132 is about 5375.5122546600. The cubic root of 28896132 is about 306.8644444639.

The spelling of 28896132 in words is "twenty-eight million, eight hundred ninety-six thousand, one hundred thirty-two".