28423679 has 2 divisors, whose sum is σ = 28423680. Its totient is φ = 28423678.

The previous prime is 28423669. The next prime is 28423721. The reversal of 28423679 is 97632482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28423679 - 2¹² = 28419583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28423649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211839 + 14211840.

It is an arithmetic number, because the mean of its divisors is an integer number (14211840).

Almost surely, 2^28423679 is an apocalyptic number.

28423679 is a deficient number, since it is larger than the sum of its proper divisors (1).

28423679 is an equidigital number, since it uses as much as digits as its factorization.

28423679 is an evil number, because the sum of its binary digits is even.

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

The square root of 28423679 is about 5331.3862174860. The cubic root of 28423679 is about 305.1828304513.

The spelling of 28423679 in words is "twenty-eight million, four hundred twenty-three thousand, six hundred seventy-nine".