28819850 has 24 divisors (see below), whose sum is σ = 53752140. Its totient is φ = 11496320.

The previous prime is 28819837. The next prime is 28819909. The reversal of 28819850 is 5891882.

It can be written as a sum of positive squares in 6 ways, for example, as 229441 + 28590409 = 479^2 + 5347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28819798 and 28819807.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 27944 + ... + 28956.

Almost surely, 2^28819850 is an apocalyptic number.

28819850 is a deficient number, since it is larger than the sum of its proper divisors (24932290).

28819850 is a wasteful number, since it uses less digits than its factorization.

28819850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 28819850 is about 5368.4122419948. The cubic root of 28819850 is about 306.5941792021.

The spelling of 28819850 in words is "twenty-eight million, eight hundred nineteen thousand, eight hundred fifty".