28487423 has 2 divisors, whose sum is σ = 28487424. Its totient is φ = 28487422.

The previous prime is 28487399. The next prime is 28487429. The reversal of 28487423 is 32478482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28487423 - 2²⁰ = 27438847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28487429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243711 + 14243712.

It is an arithmetic number, because the mean of its divisors is an integer number (14243712).

Almost surely, 2^28487423 is an apocalyptic number.

28487423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28487423 is an equidigital number, since it uses as much as digits as its factorization.

28487423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 38.

The square root of 28487423 is about 5337.3610520556. The cubic root of 28487423 is about 305.4107982430.

The spelling of 28487423 in words is "twenty-eight million, four hundred eighty-seven thousand, four hundred twenty-three".