28874539 has 2 divisors, whose sum is σ = 28874540. Its totient is φ = 28874538.

The previous prime is 28874501. The next prime is 28874567. The reversal of 28874539 is 93547882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28874539 - 2¹⁷ = 28743467 is a prime.

It is not a weakly prime, because it can be changed into another prime (28872539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14437269 + 14437270.

It is an arithmetic number, because the mean of its divisors is an integer number (14437270).

Almost surely, 2^28874539 is an apocalyptic number.

28874539 is a deficient number, since it is larger than the sum of its proper divisors (1).

28874539 is an equidigital number, since it uses as much as digits as its factorization.

28874539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 28874539 is about 5373.5034195579. The cubic root of 28874539 is about 306.7879893047.

The spelling of 28874539 in words is "twenty-eight million, eight hundred seventy-four thousand, five hundred thirty-nine".