28071344 has 40 divisors (see below), whose sum is σ = 63344160. Its totient is φ = 11801088.

The previous prime is 28071319. The next prime is 28071349. The reversal of 28071344 is 44317082.

It is not an unprimeable number, because it can be changed into a prime (28071349) 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, 3572 + ... + 8300.

It is an arithmetic number, because the mean of its divisors is an integer number (1583604).

Almost surely, 2^28071344 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 28071344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31672080).

28071344 is an abundant number, since it is smaller than the sum of its proper divisors (35272816).

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

28071344 is a wasteful number, since it uses less digits than its factorization.

28071344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4791 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28071344 is about 5298.2397076765. The cubic root of 28071344 is about 303.9165860709.

The spelling of 28071344 in words is "twenty-eight million, seventy-one thousand, three hundred forty-four".