28834521 has 16 divisors (see below), whose sum is σ = 39553920. Its totient is φ = 18673280.

The previous prime is 28834513. The next prime is 28834523. The reversal of 28834521 is 12543882.

It is a cyclic number.

It is not a de Polignac number, because 28834521 - 2³ = 28834513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28834523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43831 + ... + 44483.

It is an arithmetic number, because the mean of its divisors is an integer number (2472120).

Almost surely, 2^28834521 is an apocalyptic number.

It is an amenable number.

28834521 is a deficient number, since it is larger than the sum of its proper divisors (10719399).

28834521 is a wasteful number, since it uses less digits than its factorization.

28834521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056.

The product of its digits is 15360, while the sum is 33.

The square root of 28834521 is about 5369.7784870514. The cubic root of 28834521 is about 306.6461952046.

The spelling of 28834521 in words is "twenty-eight million, eight hundred thirty-four thousand, five hundred twenty-one".