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28258054 = 21119671009
BaseRepresentation
bin110101111001…
…0111100000110
31222011122202121
41223302330012
524213224204
62445400154
7462121666
oct153627406
958148677
1028258054
1114a50770
12956905a
135b15156
143a781a6
152732b54
hex1af2f06

28258054 has 32 divisors (see below), whose sum is σ = 49449600. Its totient is φ = 11975040.

The previous prime is 28258051. The next prime is 28258057. The reversal of 28258054 is 45085282.

28258054 = T412 + T413 + ... + T620.

It is an interprime number because it is at equal distance from previous prime (28258051) and next prime (28258057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28258051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27502 + ... + 28510.

It is an arithmetic number, because the mean of its divisors is an integer number (1545300).

Almost surely, 228258054 is an apocalyptic number.

28258054 is a deficient number, since it is larger than the sum of its proper divisors (21191546).

28258054 is a wasteful number, since it uses less digits than its factorization.

28258054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 28258054 is about 5315.8305089609. The cubic root of 28258054 is about 304.5889077753.

The spelling of 28258054 in words is "twenty-eight million, two hundred fifty-eight thousand, fifty-four".

Divisors: 1 2 11 19 22 38 67 134 209 418 737 1009 1273 1474 2018 2546 11099 14003 19171 22198 28006 38342 67603 135206 210881 421762 743633 1284457 1487266 2568914 14129027 28258054