28442927 has 8 divisors (see below), whose sum is σ = 30240864. Its totient is φ = 26691808.

The previous prime is 28442893. The next prime is 28442929. The reversal of 28442927 is 72924482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28442927 - 2⁶ = 28442863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10448 + ... + 12885.

It is an arithmetic number, because the mean of its divisors is an integer number (3780108).

Almost surely, 2^28442927 is an apocalyptic number.

28442927 is a deficient number, since it is larger than the sum of its proper divisors (1797937).

28442927 is a wasteful number, since it uses less digits than its factorization.

28442927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23409.

The product of its digits is 64512, while the sum is 38.

The square root of 28442927 is about 5333.1910710193. The cubic root of 28442927 is about 305.2517030002.

The spelling of 28442927 in words is "twenty-eight million, four hundred forty-two thousand, nine hundred twenty-seven".