28604884 has 36 divisors (see below), whose sum is σ = 62890912. Its totient is φ = 11143440.

The previous prime is 28604881. The next prime is 28604887. The reversal of 28604884 is 48840682.

It is an interprime number because it is at equal distance from previous prime (28604881) and next prime (28604887).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28604881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834 + ... + 7609.

Almost surely, 2^28604884 is an apocalyptic number.

It is an amenable number.

28604884 is an abundant number, since it is smaller than the sum of its proper divisors (34286028).

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

28604884 is a wasteful number, since it uses less digits than its factorization.

28604884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 8463 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 28604884 is about 5348.3533914655. The cubic root of 28604884 is about 305.8299851556.

It can be divided in two parts, 2860 and 4884, that added together give a square (7744 = 88²).

The spelling of 28604884 in words is "twenty-eight million, six hundred four thousand, eight hundred eighty-four".