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28214342 = 2131497283
BaseRepresentation
bin110101110100…
…0010001000110
31222002102210122
41223220101012
524210324332
62444421542
7461550362
oct153502106
958072718
1028214342
1114a20942
1295478b2
135acb2a0
143a662a2
152724c12
hex1ae8446

28214342 has 16 divisors (see below), whose sum is σ = 45889200. Its totient is φ = 12932832.

The previous prime is 28214341. The next prime is 28214357. The reversal of 28214342 is 24341282.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28214341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (2868075).

Almost surely, 228214342 is an apocalyptic number.

28214342 is a deficient number, since it is larger than the sum of its proper divisors (17674858).

28214342 is a wasteful number, since it uses less digits than its factorization.

28214342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 3072, while the sum is 26.

The square root of 28214342 is about 5311.7174247130. The cubic root of 28214342 is about 304.4317719085.

The spelling of 28214342 in words is "twenty-eight million, two hundred fourteen thousand, three hundred forty-two".

Divisors: 1 2 13 26 149 298 1937 3874 7283 14566 94679 189358 1085167 2170334 14107171 28214342