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28077 = 372191
BaseRepresentation
bin110110110101101
31102111220
412312231
51344302
6333553
7144600
oct66655
942456
1028077
111a105
12142b9
13ca1a
14a337
1584bc

28077 has 12 divisors (see below), whose sum is σ = 43776. Its totient is φ = 15960.

The previous prime is 28069. The next prime is 28081. The reversal of 28077 is 77082.

It is not a de Polignac number, because 28077 - 23 = 28069 is a prime.

It is a nialpdrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28077.

It is not an unprimeable number, because it can be changed into a prime (28027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52 + ... + 242.

It is an arithmetic number, because the mean of its divisors is an integer number (3648).

228077 is an apocalyptic number.

It is an amenable number.

28077 is a deficient number, since it is larger than the sum of its proper divisors (15699).

28077 is a wasteful number, since it uses less digits than its factorization.

28077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 28077 is about 167.5619288502. The cubic root of 28077 is about 30.3936996408.

The spelling of 28077 in words is "twenty-eight thousand, seventy-seven".

Divisors: 1 3 7 21 49 147 191 573 1337 4011 9359 28077