28214539 has 2 divisors, whose sum is σ = 28214540. Its totient is φ = 28214538.

The previous prime is 28214533. The next prime is 28214569. The reversal of 28214539 is 93541282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28214539 - 2⁵ = 28214507 is a prime.

It is not a weakly prime, because it can be changed into another prime (28214533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14107269 + 14107270.

It is an arithmetic number, because the mean of its divisors is an integer number (14107270).

Almost surely, 2^28214539 is an apocalyptic number.

28214539 is a deficient number, since it is larger than the sum of its proper divisors (1).

28214539 is an equidigital number, since it uses as much as digits as its factorization.

28214539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 28214539 is about 5311.7359685888. The cubic root of 28214539 is about 304.4324804479.

The spelling of 28214539 in words is "twenty-eight million, two hundred fourteen thousand, five hundred thirty-nine".