28465884 has 24 divisors (see below), whose sum is σ = 73800720. Its totient is φ = 9488592.

The previous prime is 28465867. The next prime is 28465889. The reversal of 28465884 is 48856482.

28465884 is a `hidden beast` number, since 28 + 46 + 588 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131679 + ... + 131894.

It is an arithmetic number, because the mean of its divisors is an integer number (3075030).

Almost surely, 2^28465884 is an apocalyptic number.

It is an amenable number.

28465884 is an abundant number, since it is smaller than the sum of its proper divisors (45334836).

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

28465884 is a wasteful number, since it uses less digits than its factorization.

28465884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263586 (or 263578 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 28465884 is about 5335.3429130657. The cubic root of 28465884 is about 305.3338063510. Note that the first 3 decimals are identical.

The spelling of 28465884 in words is "twenty-eight million, four hundred sixty-five thousand, eight hundred eighty-four".