28647419 has 2 divisors, whose sum is σ = 28647420. Its totient is φ = 28647418.

The previous prime is 28647407. The next prime is 28647427. The reversal of 28647419 is 91474682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28647419 - 2⁴ = 28647403 is a prime.

It is a super-2 number, since 2×28647419² = 1641349230723122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28647469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14323709 + 14323710.

It is an arithmetic number, because the mean of its divisors is an integer number (14323710).

Almost surely, 2^28647419 is an apocalyptic number.

28647419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28647419 is an equidigital number, since it uses as much as digits as its factorization.

28647419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 28647419 is about 5352.3283718397. The cubic root of 28647419 is about 305.9814981622.

The spelling of 28647419 in words is "twenty-eight million, six hundred forty-seven thousand, four hundred nineteen".