28988419 has 2 divisors, whose sum is σ = 28988420. Its totient is φ = 28988418.

The previous prime is 28988381. The next prime is 28988431. The reversal of 28988419 is 91488982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28988419 - 2⁷ = 28988291 is a prime.

It is a super-2 number, since 2×28988419² = 1680656872239122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28988459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14494209 + 14494210.

It is an arithmetic number, because the mean of its divisors is an integer number (14494210).

Almost surely, 2^28988419 is an apocalyptic number.

28988419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28988419 is an equidigital number, since it uses as much as digits as its factorization.

28988419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 49.

The square root of 28988419 is about 5384.0894309066. The cubic root of 28988419 is about 307.1907799956.

The spelling of 28988419 in words is "twenty-eight million, nine hundred eighty-eight thousand, four hundred nineteen".