28679423 has 8 divisors (see below), whose sum is σ = 29073408. Its totient is φ = 28287864.

The previous prime is 28679419. The next prime is 28679429. The reversal of 28679423 is 32497682.

It is a happy number.

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 28679423 - 2² = 28679419 is a prime.

It is a super-2 number, since 2×28679423² = 1645018607225858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28679429) 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, 39086 + ... + 39812.

It is an arithmetic number, because the mean of its divisors is an integer number (3634176).

Almost surely, 2^28679423 is an apocalyptic number.

28679423 is a deficient number, since it is larger than the sum of its proper divisors (393985).

28679423 is a wasteful number, since it uses less digits than its factorization.

28679423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213.

The product of its digits is 145152, while the sum is 41.

The square root of 28679423 is about 5355.3172641777. The cubic root of 28679423 is about 306.0954000749.

The spelling of 28679423 in words is "twenty-eight million, six hundred seventy-nine thousand, four hundred twenty-three".