28318902 has 16 divisors (see below), whose sum is σ = 56690112. Its totient is φ = 9430920.

The previous prime is 28318891. The next prime is 28318909. The reversal of 28318902 is 20981382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10893 + ... + 13239.

It is an arithmetic number, because the mean of its divisors is an integer number (3543132).

Almost surely, 2^28318902 is an apocalyptic number.

28318902 is an abundant number, since it is smaller than the sum of its proper divisors (28371210).

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

28318902 is a wasteful number, since it uses less digits than its factorization.

28318902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363.

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

The square root of 28318902 is about 5321.5507138427. The cubic root of 28318902 is about 304.8073745641.

The spelling of 28318902 in words is "twenty-eight million, three hundred eighteen thousand, nine hundred two".