28357423 has 2 divisors, whose sum is σ = 28357424. Its totient is φ = 28357422.

The previous prime is 28357421. The next prime is 28357453. The reversal of 28357423 is 32475382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28357423 - 2¹ = 28357421 is a prime.

Together with 28357421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28357421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178711 + 14178712.

It is an arithmetic number, because the mean of its divisors is an integer number (14178712).

Almost surely, 2^28357423 is an apocalyptic number.

28357423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28357423 is an equidigital number, since it uses as much as digits as its factorization.

28357423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 28357423 is about 5325.1688236149. The cubic root of 28357423 is about 304.9455174563.

The spelling of 28357423 in words is "twenty-eight million, three hundred fifty-seven thousand, four hundred twenty-three".