28343244 has 12 divisors (see below), whose sum is σ = 66134264. Its totient is φ = 9447744.

The previous prime is 28343243. The next prime is 28343251. The reversal of 28343244 is 44234382.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (28343243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180957 + ... + 1180980.

Almost surely, 2^28343244 is an apocalyptic number.

It is an amenable number.

28343244 is an abundant number, since it is smaller than the sum of its proper divisors (37791020).

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

28343244 is a wasteful number, since it uses less digits than its factorization.

28343244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361944 (or 2361942 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 28343244 is about 5323.8373378607. The cubic root of 28343244 is about 304.8946836959.

The spelling of 28343244 in words is "twenty-eight million, three hundred forty-three thousand, two hundred forty-four".