28314242 has 24 divisors (see below), whose sum is σ = 48722688. Its totient is φ = 12308120.

The previous prime is 28314227. The next prime is 28314259. The reversal of 28314242 is 24241382.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3023 + ... + 8109.

It is an arithmetic number, because the mean of its divisors is an integer number (2030112).

Almost surely, 2^28314242 is an apocalyptic number.

28314242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28314242 is a deficient number, since it is larger than the sum of its proper divisors (20408446).

28314242 is a wasteful number, since it uses less digits than its factorization.

28314242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134 (or 5123 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 28314242 is about 5321.1128535298. The cubic root of 28314242 is about 304.7906545151.

The spelling of 28314242 in words is "twenty-eight million, three hundred fourteen thousand, two hundred forty-two".