28020842 has 8 divisors (see below), whose sum is σ = 42220416. Its totient is φ = 13947372.

The previous prime is 28020827. The next prime is 28020847. The reversal of 28020842 is 24802082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28020847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30968 + ... + 31859.

It is an arithmetic number, because the mean of its divisors is an integer number (5277552).

Almost surely, 2^28020842 is an apocalyptic number.

28020842 is a deficient number, since it is larger than the sum of its proper divisors (14199574).

28020842 is a wasteful number, since it uses less digits than its factorization.

28020842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63052.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 28020842 is about 5293.4716396709. The cubic root of 28020842 is about 303.7342220575.

The spelling of 28020842 in words is "twenty-eight million, twenty thousand, eight hundred forty-two".