28247022 has 16 divisors (see below), whose sum is σ = 62771280. Its totient is φ = 9415656.

The previous prime is 28246997. The next prime is 28247033. The reversal of 28247022 is 22074282.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261493 + ... + 261600.

It is an arithmetic number, because the mean of its divisors is an integer number (3923205).

Almost surely, 2^28247022 is an apocalyptic number.

28247022 is an abundant number, since it is smaller than the sum of its proper divisors (34524258).

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

28247022 is a wasteful number, since it uses less digits than its factorization.

28247022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523104 (or 523098 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 28247022 is about 5314.7927523094. The cubic root of 28247022 is about 304.5492652459.

The spelling of 28247022 in words is "twenty-eight million, two hundred forty-seven thousand, twenty-two".