28214506 has 16 divisors (see below), whose sum is σ = 46087200. Its totient is φ = 12903408.

The previous prime is 28214503. The next prime is 28214507. The reversal of 28214506 is 60541282.

It is not an unprimeable number, because it can be changed into a prime (28214503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11700 + ... + 13903.

It is an arithmetic number, because the mean of its divisors is an integer number (2880450).

Almost surely, 2^28214506 is an apocalyptic number.

28214506 is a deficient number, since it is larger than the sum of its proper divisors (17872694).

28214506 is a wasteful number, since it uses less digits than its factorization.

28214506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25653.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 28214506 is about 5311.7328622588. The cubic root of 28214506 is about 304.4323617588.

Adding to 28214506 its reverse (60541282), we get a palindrome (88755788).

The spelling of 28214506 in words is "twenty-eight million, two hundred fourteen thousand, five hundred six".