28948 has 6 divisors (see below), whose sum is σ = 50666. Its totient is φ = 14472.

The previous prime is 28933. The next prime is 28949. The reversal of 28948 is 84982.

28948 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in only one way, i.e., 26244 + 2704 = 162^2 + 52^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28949) by changing a digit.

28948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3615 + ... + 3622.

2²⁸⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

28948 is a deficient number, since it is larger than the sum of its proper divisors (21718).

28948 is a wasteful number, since it uses less digits than its factorization.

28948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241 (or 7239 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 28948 is about 170.1411178992. The cubic root of 28948 is about 30.7047939972.

The spelling of 28948 in words is "twenty-eight thousand, nine hundred forty-eight".