28458423 has 24 divisors (see below), whose sum is σ = 47238048. Its totient is φ = 16172352.

The previous prime is 28458421. The next prime is 28458431. The reversal of 28458423 is 32485482.

It is not a de Polignac number, because 28458423 - 2¹ = 28458421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28458421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11265 + ... + 13557.

It is an arithmetic number, because the mean of its divisors is an integer number (1968252).

Almost surely, 2^28458423 is an apocalyptic number.

28458423 is a deficient number, since it is larger than the sum of its proper divisors (18779625).

28458423 is a wasteful number, since it uses less digits than its factorization.

28458423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2500 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28458423 is about 5334.6436619516. The cubic root of 28458423 is about 305.3071276948.

The spelling of 28458423 in words is "twenty-eight million, four hundred fifty-eight thousand, four hundred twenty-three".