28222802 has 4 divisors (see below), whose sum is σ = 42334206. Its totient is φ = 14111400.

The previous prime is 28222783. The next prime is 28222819. The reversal of 28222802 is 20822282.

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., 26429881 + 1792921 = 5141^2 + 1339^2 .

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 as a sum of consecutive naturals, namely, 7055699 + ... + 7055702.

Almost surely, 2^28222802 is an apocalyptic number.

28222802 is a deficient number, since it is larger than the sum of its proper divisors (14111404).

28222802 is a wasteful number, since it uses less digits than its factorization.

28222802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111403.

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

The square root of 28222802 is about 5312.5137176293. The cubic root of 28222802 is about 304.4621965700.

It can be divided in two parts, 2822280 and 2, that added together give a palindrome (2822282).

The spelling of 28222802 in words is "twenty-eight million, two hundred twenty-two thousand, eight hundred two".