28290902 has 8 divisors (see below), whose sum is σ = 43471512. Its totient is φ = 13800400.

The previous prime is 28290893. The next prime is 28290917. The reversal of 28290902 is 20909282.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172424 + ... + 172587.

It is an arithmetic number, because the mean of its divisors is an integer number (5433939).

Almost surely, 2^28290902 is an apocalyptic number.

28290902 is a deficient number, since it is larger than the sum of its proper divisors (15180610).

28290902 is a wasteful number, since it uses less digits than its factorization.

28290902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345054.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 28290902 is about 5318.9192511261. The cubic root of 28290902 is about 304.7068831342.

It can be divided in two parts, 28290 and 902, that added together give a palindrome (29192).

The spelling of 28290902 in words is "twenty-eight million, two hundred ninety thousand, nine hundred two".