28232802 has 36 divisors (see below), whose sum is σ = 66245634. Its totient is φ = 8686080.

The previous prime is 28232797. The next prime is 28232819. The reversal of 28232802 is 20823282.

It can be written as a sum of positive squares in 3 ways, for example, as 20331081 + 7901721 = 4509^2 + 2811^2 .

It is a super-2 number, since 2×28232802² = 1594182217542408, which contains 22 as substring.

It is a congruent number.

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 in 17 ways as a sum of consecutive naturals, for example, 1599 + ... + 7682.

Almost surely, 2^28232802 is an apocalyptic number.

28232802 is an abundant number, since it is smaller than the sum of its proper divisors (38012832).

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

28232802 is a wasteful number, since it uses less digits than its factorization.

28232802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315 (or 9299 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28232802 is about 5313.4548083145. The cubic root of 28232802 is about 304.4981516870.

It can be divided in two parts, 2823280 and 2, that added together give a palindrome (2823282).

The spelling of 28232802 in words is "twenty-eight million, two hundred thirty-two thousand, eight hundred two".