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28234379 = 109431601
BaseRepresentation
bin110101110110…
…1001010001011
31222010110021202
41223231022023
524212000004
62445054415
7461662655
oct153551213
958113252
1028234379
1114a349a8
12955740b
135b07444
143a6d6d5
15272ab1e
hex1aed28b

28234379 has 8 divisors (see below), whose sum is σ = 28607040. Its totient is φ = 27864000.

The previous prime is 28234373. The next prime is 28234387. The reversal of 28234379 is 97343282.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28234379 - 212 = 28230283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28234373) 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, 46679 + ... + 47279.

It is an arithmetic number, because the mean of its divisors is an integer number (3575880).

Almost surely, 228234379 is an apocalyptic number.

28234379 is a deficient number, since it is larger than the sum of its proper divisors (372661).

28234379 is a wasteful number, since it uses less digits than its factorization.

28234379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 72576, while the sum is 38.

The square root of 28234379 is about 5313.6032031005. The cubic root of 28234379 is about 304.5038210339.

The spelling of 28234379 in words is "twenty-eight million, two hundred thirty-four thousand, three hundred seventy-nine".

Divisors: 1 109 431 601 46979 65509 259031 28234379