Search a number
28377 = 331051
BaseRepresentation
bin110111011011001
31102221000
412323121
51402002
6335213
7145506
oct67331
942830
1028377
111a358
1214509
13cbbb
15861c
hex6ed9

28377 has 8 divisors (see below), whose sum is σ = 42080. Its totient is φ = 18900.

The previous prime is 28351. The next prime is 28387. The reversal of 28377 is 77382.

It is not a de Polignac number, because 28377 - 212 = 24281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1051 = 28377 / (2 + 8 + 3 + 7 + 7).

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 28377.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28377.

It is not an unprimeable number, because it can be changed into a prime (28307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499 + ... + 552.

It is an arithmetic number, because the mean of its divisors is an integer number (5260).

228377 is an apocalyptic number.

28377 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28377 is a deficient number, since it is larger than the sum of its proper divisors (13703).

28377 is a wasteful number, since it uses less digits than its factorization.

28377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1054 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 28377 is about 168.4547416964. The cubic root of 28377 is about 30.5015675984.

The spelling of 28377 in words is "twenty-eight thousand, three hundred seventy-seven".

Divisors: 1 3 9 27 1051 3153 9459 28377