28067923 has 8 divisors (see below), whose sum is σ = 30268448. Its totient is φ = 25873344.

The previous prime is 28067891. The next prime is 28067939. The reversal of 28067923 is 32976082.

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 28067923 - 2⁵ = 28067891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28067953) 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, 16111 + ... + 17767.

It is an arithmetic number, because the mean of its divisors is an integer number (3783556).

Almost surely, 2^28067923 is an apocalyptic number.

28067923 is a deficient number, since it is larger than the sum of its proper divisors (2200525).

28067923 is a wasteful number, since it uses less digits than its factorization.

28067923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 28067923 is about 5297.9168547647. The cubic root of 28067923 is about 303.9042396620.

The spelling of 28067923 in words is "twenty-eight million, sixty-seven thousand, nine hundred twenty-three".