28609023 has 8 divisors (see below), whose sum is σ = 38270848. Its totient is φ = 19009944.

The previous prime is 28609019. The next prime is 28609027. The reversal of 28609023 is 32090682.

It is an interprime number because it is at equal distance from previous prime (28609019) and next prime (28609027).

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

It is not a de Polignac number, because 28609023 - 2² = 28609019 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 (28609027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14611 + ... + 16452.

It is an arithmetic number, because the mean of its divisors is an integer number (4783856).

Almost surely, 2^28609023 is an apocalyptic number.

28609023 is a deficient number, since it is larger than the sum of its proper divisors (9661825).

28609023 is a wasteful number, since it uses less digits than its factorization.

28609023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31373.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 28609023 is about 5348.7403189910. The cubic root of 28609023 is about 305.8447351922.

The spelling of 28609023 in words is "twenty-eight million, six hundred nine thousand, twenty-three".