28937 has 4 divisors (see below), whose sum is σ = 30480. Its totient is φ = 27396.

The previous prime is 28933. The next prime is 28949. The reversal of 28937 is 73982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28937 - 2² = 28933 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28937.

It is not an unprimeable number, because it can be changed into a prime (28933) 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, 743 + ... + 780.

It is an arithmetic number, because the mean of its divisors is an integer number (7620).

2²⁸⁹³⁷ is an apocalyptic number.

It is an amenable number.

28937 is a deficient number, since it is larger than the sum of its proper divisors (1543).

28937 is a wasteful number, since it uses less digits than its factorization.

28937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542.

The product of its digits is 3024, while the sum is 29.

The square root of 28937 is about 170.1087887206. The cubic root of 28937 is about 30.7009043154.

The spelling of 28937 in words is "twenty-eight thousand, nine hundred thirty-seven".