28823619 has 32 divisors (see below), whose sum is σ = 44789760. Its totient is φ = 16294400.

The previous prime is 28823617. The next prime is 28823621. The reversal of 28823619 is 91632882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28823617) and next prime (28823621).

It is a cyclic number.

It is not a de Polignac number, because 28823619 - 2¹ = 28823617 is a prime.

It is a super-2 number, since 2×28823619² = 1661602024514322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28823611) 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 31 ways as a sum of consecutive naturals, for example, 107017 + ... + 107285.

It is an arithmetic number, because the mean of its divisors is an integer number (1399680).

Almost surely, 2^28823619 is an apocalyptic number.

28823619 is a deficient number, since it is larger than the sum of its proper divisors (15966141).

28823619 is a wasteful number, since it uses less digits than its factorization.

28823619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its digits is 41472, while the sum is 39.

The square root of 28823619 is about 5368.7632654085. The cubic root of 28823619 is about 306.6075438691.

The spelling of 28823619 in words is "twenty-eight million, eight hundred twenty-three thousand, six hundred nineteen".