28423822 has 12 divisors (see below), whose sum is σ = 49596840. Its totient is φ = 12181596.

The previous prime is 28423819. The next prime is 28423831. The reversal of 28423822 is 22832482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144922 + ... + 145117.

It is an arithmetic number, because the mean of its divisors is an integer number (4133070).

Almost surely, 2^28423822 is an apocalyptic number.

28423822 is a deficient number, since it is larger than the sum of its proper divisors (21173018).

28423822 is a wasteful number, since it uses less digits than its factorization.

28423822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290055 (or 290048 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 28423822 is about 5331.3996286154. The cubic root of 28423822 is about 305.1833422438.

The spelling of 28423822 in words is "twenty-eight million, four hundred twenty-three thousand, eight hundred twenty-two".