28319802 has 32 divisors (see below), whose sum is σ = 66822144. Its totient is φ = 7830000.

The previous prime is 28319789. The next prime is 28319813. The reversal of 28319802 is 20891382.

It is a super-2 number, since 2×28319802² = 1604022370638408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9574 + ... + 12177.

It is an arithmetic number, because the mean of its divisors is an integer number (2088192).

Almost surely, 2^28319802 is an apocalyptic number.

28319802 is an abundant number, since it is smaller than the sum of its proper divisors (38502342).

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

28319802 is a wasteful number, since it uses less digits than its factorization.

28319802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21794.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 28319802 is about 5321.6352749883. The cubic root of 28319802 is about 304.8106035468.

The spelling of 28319802 in words is "twenty-eight million, three hundred nineteen thousand, eight hundred two".