28532899 has 2 divisors, whose sum is σ = 28532900. Its totient is φ = 28532898.

The previous prime is 28532893. The next prime is 28532929. The reversal of 28532899 is 99823582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28532899 - 2³ = 28532891 is a prime.

It is not a weakly prime, because it can be changed into another prime (28532891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14266449 + 14266450.

It is an arithmetic number, because the mean of its divisors is an integer number (14266450).

Almost surely, 2^28532899 is an apocalyptic number.

28532899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28532899 is an equidigital number, since it uses as much as digits as its factorization.

28532899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 28532899 is about 5341.6195109723. The cubic root of 28532899 is about 305.5732263842.

The spelling of 28532899 in words is "twenty-eight million, five hundred thirty-two thousand, eight hundred ninety-nine".