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28790 = 252879
BaseRepresentation
bin111000001110110
31110111022
413001312
51410130
6341142
7146636
oct70166
943438
1028790
111a6a3
12147b2
1310148
14a6c6
1587e5
hex7076

28790 has 8 divisors (see below), whose sum is σ = 51840. Its totient is φ = 11512.

The previous prime is 28789. The next prime is 28793. The reversal of 28790 is 9782.

28790 = 282 + 292 + ... + 472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28793) 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, 1430 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

228790 is an apocalyptic number.

28790 is a deficient number, since it is larger than the sum of its proper divisors (23050).

28790 is a wasteful number, since it uses less digits than its factorization.

28790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 28790 is about 169.6761621442. The cubic root of 28790 is about 30.6488291562.

It can be divided in two parts, 28 and 790, that added together give a palindrome (818).

The spelling of 28790 in words is "twenty-eight thousand, seven hundred ninety".

Divisors: 1 2 5 10 2879 5758 14395 28790