28008342 has 40 divisors (see below), whose sum is σ = 65496816. Its totient is φ = 8929008.

The previous prime is 28008317. The next prime is 28008347. The reversal of 28008342 is 24380082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008347) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33 + ... + 7484.

Almost surely, 2^28008342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28008342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32748408).

28008342 is an abundant number, since it is smaller than the sum of its proper divisors (37488474).

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

28008342 is a wasteful number, since it uses less digits than its factorization.

28008342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554 (or 7545 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28008342 is about 5292.2908083362. The cubic root of 28008342 is about 303.6890504137.

The spelling of 28008342 in words is "twenty-eight million, eight thousand, three hundred forty-two".