28513283 has 2 divisors, whose sum is σ = 28513284. Its totient is φ = 28513282.

The previous prime is 28513279. The next prime is 28513297. The reversal of 28513283 is 38231582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28513283 - 2² = 28513279 is a prime.

It is not a weakly prime, because it can be changed into another prime (28513213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14256641 + 14256642.

It is an arithmetic number, because the mean of its divisors is an integer number (14256642).

Almost surely, 2^28513283 is an apocalyptic number.

28513283 is a deficient number, since it is larger than the sum of its proper divisors (1).

28513283 is an equidigital number, since it uses as much as digits as its factorization.

28513283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 28513283 is about 5339.7830480273. The cubic root of 28513283 is about 305.5031844470.

The spelling of 28513283 in words is "twenty-eight million, five hundred thirteen thousand, two hundred eighty-three".