28418419 has 2 divisors, whose sum is σ = 28418420. Its totient is φ = 28418418.

The previous prime is 28418387. The next prime is 28418437. The reversal of 28418419 is 91481482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28418419 - 2⁵ = 28418387 is a prime.

It is a super-2 number, since 2×28418419² = 1615213076919122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28418119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209209 + 14209210.

It is an arithmetic number, because the mean of its divisors is an integer number (14209210).

Almost surely, 2^28418419 is an apocalyptic number.

28418419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418419 is an equidigital number, since it uses as much as digits as its factorization.

28418419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 37.

The square root of 28418419 is about 5330.8928895636. The cubic root of 28418419 is about 305.1640038863.

The spelling of 28418419 in words is "twenty-eight million, four hundred eighteen thousand, four hundred nineteen".