28326930 has 64 divisors (see below), whose sum is σ = 73146240. Its totient is φ = 6994944.

The previous prime is 28326919. The next prime is 28326937. The reversal of 28326930 is 3962382.

It is a junction number, because it is equal to n+sod(n) for n = 28326891 and 28326900.

It is not an unprimeable number, because it can be changed into a prime (28326937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33756 + ... + 34584.

It is an arithmetic number, because the mean of its divisors is an integer number (1142910).

Almost surely, 2^28326930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28326930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36573120).

28326930 is an abundant number, since it is smaller than the sum of its proper divisors (44819310).

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

28326930 is a wasteful number, since it uses less digits than its factorization.

28326930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 28326930 is about 5322.3049518042. The cubic root of 28326930 is about 304.8361746733.

The spelling of 28326930 in words is "twenty-eight million, three hundred twenty-six thousand, nine hundred thirty".