28803842 has 4 divisors (see below), whose sum is σ = 43205766. Its totient is φ = 14401920.

The previous prime is 28803833. The next prime is 28803869. The reversal of 28803842 is 24830882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 1125721 = 5261^2 + 1061^2 .

It is a super-2 number, since 2×28803842² = 1659322627921928, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7200959 + ... + 7200962.

Almost surely, 2^28803842 is an apocalyptic number.

28803842 is a deficient number, since it is larger than the sum of its proper divisors (14401924).

28803842 is a wasteful number, since it uses less digits than its factorization.

28803842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14401923.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 28803842 is about 5366.9210912776. The cubic root of 28803842 is about 306.5374027256.

The spelling of 28803842 in words is "twenty-eight million, eight hundred three thousand, eight hundred forty-two".