28910419 has 16 divisors (see below), whose sum is σ = 31968000. Its totient is φ = 26036640.

The previous prime is 28910393. The next prime is 28910429. The reversal of 28910419 is 91401982.

It is a cyclic number.

It is not a de Polignac number, because 28910419 - 2⁷ = 28910291 is a prime.

It is a super-2 number, since 2×28910419² = 1671624653511122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28910429) 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 in 15 ways as a sum of consecutive naturals, for example, 38752 + ... + 39490.

It is an arithmetic number, because the mean of its divisors is an integer number (1998000).

Almost surely, 2^28910419 is an apocalyptic number.

28910419 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28910419 is a deficient number, since it is larger than the sum of its proper divisors (3057581).

28910419 is a wasteful number, since it uses less digits than its factorization.

28910419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 28910419 is about 5376.8409870481. The cubic root of 28910419 is about 306.9150100548.

The spelling of 28910419 in words is "twenty-eight million, nine hundred ten thousand, four hundred nineteen".