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28726152 = 23372131879
BaseRepresentation
bin110110110010…
…1001110001000
32000001102212120
41231211032020
524323214102
62503411240
7466111500
oct155451610
960042776
1028726152
1115240424
129753b20
135c4a230
143b5aa00
1527c66bc
hex1b65388

28726152 has 96 divisors (see below), whose sum is σ = 90014400. Its totient is φ = 7572096.

The previous prime is 28726151. The next prime is 28726163. The reversal of 28726152 is 25162782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28726151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14349 + ... + 16227.

It is an arithmetic number, because the mean of its divisors is an integer number (937650).

Almost surely, 228726152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28726152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45007200).

28726152 is an abundant number, since it is smaller than the sum of its proper divisors (61288248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28726152 is a wasteful number, since it uses less digits than its factorization.

28726152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1904 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 28726152 is about 5359.6783485579. The cubic root of 28726152 is about 306.2615560265.

The spelling of 28726152 in words is "twenty-eight million, seven hundred twenty-six thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 12 13 14 21 24 26 28 39 42 49 52 56 78 84 91 98 104 147 156 168 182 196 273 294 312 364 392 546 588 637 728 1092 1176 1274 1879 1911 2184 2548 3758 3822 5096 5637 7516 7644 11274 13153 15032 15288 22548 24427 26306 39459 45096 48854 52612 73281 78918 92071 97708 105224 146562 157836 170989 184142 195416 276213 293124 315672 341978 368284 512967 552426 586248 683956 736568 1025934 1104852 1196923 1367912 2051868 2209704 2393846 3590769 4103736 4787692 7181538 9575384 14363076 28726152