28262513 has 2 divisors, whose sum is σ = 28262514. Its totient is φ = 28262512.

The previous prime is 28262503. The next prime is 28262537. The reversal of 28262513 is 31526282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28058209 + 204304 = 5297^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 28262513 - 2⁴ = 28262497 is a prime.

It is not a weakly prime, because it can be changed into another prime (28262503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14131256 + 14131257.

It is an arithmetic number, because the mean of its divisors is an integer number (14131257).

Almost surely, 2^28262513 is an apocalyptic number.

It is an amenable number.

28262513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28262513 is an equidigital number, since it uses as much as digits as its factorization.

28262513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 28262513 is about 5316.2499000705. The cubic root of 28262513 is about 304.6049278748.

Adding to 28262513 its reverse (31526282), we get a palindrome (59788795).

The spelling of 28262513 in words is "twenty-eight million, two hundred sixty-two thousand, five hundred thirteen".