28412 has 6 divisors (see below), whose sum is σ = 49728. Its totient is φ = 14204.

The previous prime is 28411. The next prime is 28429. The reversal of 28412 is 21482.

It is a plaindrome in base 7.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3548 + ... + 3555.

It is an arithmetic number, because the mean of its divisors is an integer number (8288).

2²⁸⁴¹² is an apocalyptic number.

It is an amenable number.

28412 is a deficient number, since it is larger than the sum of its proper divisors (21316).

28412 is a wasteful number, since it uses less digits than its factorization.

28412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7107 (or 7105 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 28412 is about 168.5585951531. The cubic root of 28412 is about 30.5141025887.

Adding to 28412 its reverse (21482), we get a palindrome (49894).

The spelling of 28412 in words is "twenty-eight thousand, four hundred twelve".