28247814 has 36 divisors (see below), whose sum is σ = 71198244. Its totient is φ = 8070552.

The previous prime is 28247809. The next prime is 28247831. The reversal of 28247814 is 41874282.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15132 + ... + 16895.

It is an arithmetic number, because the mean of its divisors is an integer number (1977729).

Almost surely, 2^28247814 is an apocalyptic number.

28247814 is an abundant number, since it is smaller than the sum of its proper divisors (42950430).

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

28247814 is a wasteful number, since it uses less digits than its factorization.

28247814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32049 (or 32039 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 28247814 is about 5314.8672608072. The cubic root of 28247814 is about 304.5521115727.

The spelling of 28247814 in words is "twenty-eight million, two hundred forty-seven thousand, eight hundred fourteen".