28821414 has 8 divisors (see below), whose sum is σ = 57642840. Its totient is φ = 9607136.

The previous prime is 28821407. The next prime is 28821427. The reversal of 28821414 is 41412882.

It is a sphenic number, since it is the product of 3 distinct primes.

28821414 is an admirable number.

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, 2401779 + ... + 2401790.

It is an arithmetic number, because the mean of its divisors is an integer number (7205355).

Almost surely, 2^28821414 is an apocalyptic number.

28821414 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28821414 is a wasteful number, since it uses less digits than its factorization.

28821414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803574.

The product of its digits is 4096, while the sum is 30.

The square root of 28821414 is about 5368.5579069244. The cubic root of 28821414 is about 306.5997252017.

The spelling of 28821414 in words is "twenty-eight million, eight hundred twenty-one thousand, four hundred fourteen".