28514539 has 2 divisors, whose sum is σ = 28514540. Its totient is φ = 28514538.

The previous prime is 28514527. The next prime is 28514543. The reversal of 28514539 is 93541582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28514539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28514498 and 28514507.

It is not a weakly prime, because it can be changed into another prime (28514039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14257269 + 14257270.

It is an arithmetic number, because the mean of its divisors is an integer number (14257270).

Almost surely, 2^28514539 is an apocalyptic number.

28514539 is a deficient number, since it is larger than the sum of its proper divisors (1).

28514539 is an equidigital number, since it uses as much as digits as its factorization.

28514539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 28514539 is about 5339.9006545066. The cubic root of 28514539 is about 305.5076701501.

The spelling of 28514539 in words is "twenty-eight million, five hundred fourteen thousand, five hundred thirty-nine".