28879727 has 2 divisors, whose sum is σ = 28879728. Its totient is φ = 28879726.

The previous prime is 28879723. The next prime is 28879759. The reversal of 28879727 is 72797882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28879727 - 2² = 28879723 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28879723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14439863 + 14439864.

It is an arithmetic number, because the mean of its divisors is an integer number (14439864).

Almost surely, 2^28879727 is an apocalyptic number.

28879727 is a deficient number, since it is larger than the sum of its proper divisors (1).

28879727 is an equidigital number, since it uses as much as digits as its factorization.

28879727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 50.

The square root of 28879727 is about 5373.9861369378. The cubic root of 28879727 is about 306.8063621322.

The spelling of 28879727 in words is "twenty-eight million, eight hundred seventy-nine thousand, seven hundred twenty-seven".