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28605695 = 55721139
BaseRepresentation
bin110110100011…
…1110011111111
31222211022122012
41231013303333
524310340240
62501041435
7465100346
oct155076377
958738565
1028605695
1115168978
1296b627b
135c07461
143b28b5d
1527a0b65
hex1b47cff

28605695 has 4 divisors (see below), whose sum is σ = 34326840. Its totient is φ = 22884552.

The previous prime is 28605691. The next prime is 28605749. The reversal of 28605695 is 59650682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28605695 - 22 = 28605691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28605691) 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, 2860565 + ... + 2860574.

It is an arithmetic number, because the mean of its divisors is an integer number (8581710).

Almost surely, 228605695 is an apocalyptic number.

28605695 is a deficient number, since it is larger than the sum of its proper divisors (5721145).

28605695 is an equidigital number, since it uses as much as digits as its factorization.

28605695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721144.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 28605695 is about 5348.4292086556. The cubic root of 28605695 is about 305.8328754053.

The spelling of 28605695 in words is "twenty-eight million, six hundred five thousand, six hundred ninety-five".

Divisors: 1 5 5721139 28605695