28423827 has 6 divisors (see below), whose sum is σ = 41056652. Its totient is φ = 18949212.

The previous prime is 28423819. The next prime is 28423831. The reversal of 28423827 is 72832482.

It is not a de Polignac number, because 28423827 - 2³ = 28423819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28423791 and 28423800.

It is not an unprimeable number, because it can be changed into a prime (28423897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1579093 + ... + 1579110.

Almost surely, 2^28423827 is an apocalyptic number.

28423827 is a deficient number, since it is larger than the sum of its proper divisors (12632825).

28423827 is a wasteful number, since it uses less digits than its factorization.

28423827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158209 (or 3158206 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 28423827 is about 5331.4000975354. The cubic root of 28423827 is about 305.1833601386.

The spelling of 28423827 in words is "twenty-eight million, four hundred twenty-three thousand, eight hundred twenty-seven".