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28902 = 234817
BaseRepresentation
bin111000011100110
31110122110
413003212
51411102
6341450
7150156
oct70346
943573
1028902
111a795
1214886
1310203
14a766
15886c
hex70e6

28902 has 8 divisors (see below), whose sum is σ = 57816. Its totient is φ = 9632.

The previous prime is 28901. The next prime is 28909. The reversal of 28902 is 20982.

28902 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901) 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, 2403 + ... + 2414.

It is an arithmetic number, because the mean of its divisors is an integer number (7227).

228902 is an apocalyptic number.

28902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28908).

28902 is a wasteful number, since it uses less digits than its factorization.

28902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28902 is about 170.0058822512. The cubic root of 28902 is about 30.6885214933.

The spelling of 28902 in words is "twenty-eight thousand, nine hundred two".

Divisors: 1 2 3 6 4817 9634 14451 28902