28840214 has 32 divisors (see below), whose sum is σ = 49728000. Its totient is φ = 12433824.

The previous prime is 28840193. The next prime is 28840241. The reversal of 28840214 is 41204882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38657 + ... + 39395.

It is an arithmetic number, because the mean of its divisors is an integer number (1554000).

Almost surely, 2^28840214 is an apocalyptic number.

28840214 is a deficient number, since it is larger than the sum of its proper divisors (20887786).

28840214 is a wasteful number, since it uses less digits than its factorization.

28840214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 28840214 is about 5370.3085572432. The cubic root of 28840214 is about 306.6663749735. Note that the first 3 decimals are identical.

The spelling of 28840214 in words is "twenty-eight million, eight hundred forty thousand, two hundred fourteen".