28654019 has 2 divisors, whose sum is σ = 28654020. Its totient is φ = 28654018.

The previous prime is 28653997. The next prime is 28654037. The reversal of 28654019 is 91045682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28654019 - 2¹² = 28649923 is a prime.

It is a super-2 number, since 2×28654019² = 1642105609704722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28654019.

It is not a weakly prime, because it can be changed into another prime (28654319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14327009 + 14327010.

It is an arithmetic number, because the mean of its divisors is an integer number (14327010).

Almost surely, 2^28654019 is an apocalyptic number.

28654019 is a deficient number, since it is larger than the sum of its proper divisors (1).

28654019 is an equidigital number, since it uses as much as digits as its factorization.

28654019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28654019 is about 5352.9448904318. The cubic root of 28654019 is about 306.0049944363.

The spelling of 28654019 in words is "twenty-eight million, six hundred fifty-four thousand, nineteen".