28565419 has 2 divisors, whose sum is σ = 28565420. Its totient is φ = 28565418.

The previous prime is 28565413. The next prime is 28565441. The reversal of 28565419 is 91456582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28565419 - 2¹³ = 28557227 is a prime.

It is a super-2 number, since 2×28565419² = 1631966325291122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28565413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14282709 + 14282710.

It is an arithmetic number, because the mean of its divisors is an integer number (14282710).

Almost surely, 2^28565419 is an apocalyptic number.

28565419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28565419 is an equidigital number, since it uses as much as digits as its factorization.

28565419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 28565419 is about 5344.6626647526. The cubic root of 28565419 is about 305.6892733426.

The spelling of 28565419 in words is "twenty-eight million, five hundred sixty-five thousand, four hundred nineteen".