28823812 has 12 divisors (see below), whose sum is σ = 50480080. Its totient is φ = 14400936.

The previous prime is 28823783. The next prime is 28823819. The reversal of 28823812 is 21832882.

It is a super-2 number, since 2×28823812² = 1661624276422688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28823819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7063 + ... + 10369.

Almost surely, 2^28823812 is an apocalyptic number.

It is an amenable number.

28823812 is a deficient number, since it is larger than the sum of its proper divisors (21656268).

28823812 is a wasteful number, since it uses less digits than its factorization.

28823812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490 (or 5488 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 28823812 is about 5368.7812397228. The cubic root of 28823812 is about 306.6082282051.

The spelling of 28823812 in words is "twenty-eight million, eight hundred twenty-three thousand, eight hundred twelve".