28922513 has 2 divisors, whose sum is σ = 28922514. Its totient is φ = 28922512.

The previous prime is 28922501. The next prime is 28922519. The reversal of 28922513 is 31522982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19509889 + 9412624 = 4417^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 28922513 - 2⁴ = 28922497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28922513.

It is not a weakly prime, because it can be changed into another prime (28922519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461256 + 14461257.

It is an arithmetic number, because the mean of its divisors is an integer number (14461257).

Almost surely, 2^28922513 is an apocalyptic number.

It is an amenable number.

28922513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922513 is an equidigital number, since it uses as much as digits as its factorization.

28922513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 28922513 is about 5377.9655075130. The cubic root of 28922513 is about 306.9578010023.

The spelling of 28922513 in words is "twenty-eight million, nine hundred twenty-two thousand, five hundred thirteen".