28379513 has 2 divisors, whose sum is σ = 28379514. Its totient is φ = 28379512.

The previous prime is 28379501. The next prime is 28379543. The reversal of 28379513 is 31597382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 6775609 = 4648^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 28379513 - 2⁴ = 28379497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28379543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14189756 + 14189757.

It is an arithmetic number, because the mean of its divisors is an integer number (14189757).

Almost surely, 2^28379513 is an apocalyptic number.

It is an amenable number.

28379513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28379513 is an equidigital number, since it uses as much as digits as its factorization.

28379513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 28379513 is about 5327.2425324928. The cubic root of 28379513 is about 305.0246795402.

The spelling of 28379513 in words is "twenty-eight million, three hundred seventy-nine thousand, five hundred thirteen".