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28666095 = 351911073
BaseRepresentation
bin110110101011…
…0100011101111
31222221101111020
41231112203233
524314303340
62502225223
7465441423
oct155264357
958841436
1028666095
11151aa297
129725213
135c28ab3
143b42b83
1527b39d0
hex1b568ef

28666095 has 8 divisors (see below), whose sum is σ = 45865776. Its totient is φ = 15288576.

The previous prime is 28666091. The next prime is 28666129. The reversal of 28666095 is 59066682.

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

It is not a de Polignac number, because 28666095 - 22 = 28666091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666091) 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, 955522 + ... + 955551.

It is an arithmetic number, because the mean of its divisors is an integer number (5733222).

Almost surely, 228666095 is an apocalyptic number.

28666095 is a deficient number, since it is larger than the sum of its proper divisors (17199681).

28666095 is a wasteful number, since it uses less digits than its factorization.

28666095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911081.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 28666095 is about 5354.0727488520. The cubic root of 28666095 is about 306.0479761592.

The spelling of 28666095 in words is "twenty-eight million, six hundred sixty-six thousand, ninety-five".

Divisors: 1 3 5 15 1911073 5733219 9555365 28666095