28032276 has 12 divisors (see below), whose sum is σ = 65408672. Its totient is φ = 9344088.

The previous prime is 28032227. The next prime is 28032287. The reversal of 28032276 is 67223082.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168000 + ... + 1168023.

Almost surely, 2^28032276 is an apocalyptic number.

It is an amenable number.

28032276 is an abundant number, since it is smaller than the sum of its proper divisors (37376396).

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

28032276 is a wasteful number, since it uses less digits than its factorization.

28032276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336030 (or 2336028 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28032276 is about 5294.5515390824. The cubic root of 28032276 is about 303.7755297006.

The spelling of 28032276 in words is "twenty-eight million, thirty-two thousand, two hundred seventy-six".