28654 has 4 divisors (see below), whose sum is σ = 42984. Its totient is φ = 14326.

The previous prime is 28649. The next prime is 28657. The reversal of 28654 is 45682.

It is a semiprime because it is the product of two primes.

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 (28657) by changing a digit.

28654 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, 7162 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (10746).

2²⁸⁶⁵⁴ is an apocalyptic number.

28654 is a deficient number, since it is larger than the sum of its proper divisors (14330).

28654 is a wasteful number, since it uses less digits than its factorization.

28654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14329.

The product of its digits is 1920, while the sum is 25.

The square root of 28654 is about 169.2749243095. The cubic root of 28654 is about 30.6004926801.

The spelling of 28654 in words is "twenty-eight thousand, six hundred fifty-four".