28063427 has 24 divisors (see below), whose sum is σ = 35037216. Its totient is φ = 22353408.

The previous prime is 28063421. The next prime is 28063429. The reversal of 28063427 is 72436082.

It is not a de Polignac number, because 28063427 - 2⁴ = 28063411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28063393 and 28063402.

It is not an unprimeable number, because it can be changed into a prime (28063421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41363 + ... + 42035.

It is an arithmetic number, because the mean of its divisors is an integer number (1459884).

Almost surely, 2^28063427 is an apocalyptic number.

28063427 is a deficient number, since it is larger than the sum of its proper divisors (6973789).

28063427 is a wasteful number, since it uses less digits than its factorization.

28063427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 28063427 is about 5297.4925200513. The cubic root of 28063427 is about 303.8880120460. Note that the first 3 decimals are identical.

The spelling of 28063427 in words is "twenty-eight million, sixty-three thousand, four hundred twenty-seven".