28999850 has 24 divisors (see below), whose sum is σ = 58844448. Its totient is φ = 10545200.

The previous prime is 28999847. The next prime is 28999853. The reversal of 28999850 is 5899982.

It is an interprime number because it is at equal distance from previous prime (28999847) and next prime (28999853).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28999853) 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 in 11 ways as a sum of consecutive naturals, for example, 25814 + ... + 26913.

It is an arithmetic number, because the mean of its divisors is an integer number (2451852).

Almost surely, 2^28999850 is an apocalyptic number.

28999850 is an abundant number, since it is smaller than the sum of its proper divisors (29844598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28999850 is a wasteful number, since it uses less digits than its factorization.

28999850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52750 (or 52745 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 28999850 is about 5385.1508799661. The cubic root of 28999850 is about 307.2311528579.

The spelling of 28999850 in words is "twenty-eight million, nine hundred ninety-nine thousand, eight hundred fifty".