28439352 has 48 divisors (see below), whose sum is σ = 81081000. Its totient is φ = 8980416.

The previous prime is 28439329. The next prime is 28439353. The reversal of 28439352 is 25393482.

28439352 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28439353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9027 + ... + 11762.

Almost surely, 2^28439352 is an apocalyptic number.

It is an amenable number.

28439352 is an abundant number, since it is smaller than the sum of its proper divisors (52641648).

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

28439352 is a wasteful number, since it uses less digits than its factorization.

28439352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20820 (or 20813 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 28439352 is about 5332.8558952966. The cubic root of 28439352 is about 305.2389134051.

The spelling of 28439352 in words is "twenty-eight million, four hundred thirty-nine thousand, three hundred fifty-two".