28714919 has 2 divisors, whose sum is σ = 28714920. Its totient is φ = 28714918.

The previous prime is 28714913. The next prime is 28714949. The reversal of 28714919 is 91941782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28714919 - 2¹² = 28710823 is a prime.

It is a super-2 number, since 2×28714919² = 1649093146353122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28714913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14357459 + 14357460.

It is an arithmetic number, because the mean of its divisors is an integer number (14357460).

Almost surely, 2^28714919 is an apocalyptic number.

28714919 is a deficient number, since it is larger than the sum of its proper divisors (1).

28714919 is an equidigital number, since it uses as much as digits as its factorization.

28714919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 28714919 is about 5358.6303287314. The cubic root of 28714919 is about 306.2216309137.

The spelling of 28714919 in words is "twenty-eight million, seven hundred fourteen thousand, nine hundred nineteen".