28373884 has 48 divisors (see below), whose sum is σ = 65560320. Its totient is φ = 10402560.

The previous prime is 28373879. The next prime is 28373893. The reversal of 28373884 is 48837382.

It is a self number, because there is not a number n which added to its sum of digits gives 28373884.

It is a congruent number.

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, 2527 + ... + 7945.

It is an arithmetic number, because the mean of its divisors is an integer number (1365840).

Almost surely, 2^28373884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28373884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32780160).

28373884 is an abundant number, since it is smaller than the sum of its proper divisors (37186436).

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

28373884 is a wasteful number, since it uses less digits than its factorization.

28373884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458 (or 5456 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 28373884 is about 5326.7141841852. The cubic root of 28373884 is about 305.0045112654.

The spelling of 28373884 in words is "twenty-eight million, three hundred seventy-three thousand, eight hundred eighty-four".