28344030 has 64 divisors (see below), whose sum is σ = 79930368. Its totient is φ = 6341760.

The previous prime is 28344011. The next prime is 28344031. The reversal of 28344030 is 3044382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28344031) 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, 987 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (1248912).

Almost surely, 2^28344030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28344030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39965184).

28344030 is an abundant number, since it is smaller than the sum of its proper divisors (51586338).

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

28344030 is a wasteful number, since it uses less digits than its factorization.

28344030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 28344030 is about 5323.9111562835. The cubic root of 28344030 is about 304.8975020630.

The spelling of 28344030 in words is "twenty-eight million, three hundred forty-four thousand, thirty".