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28000525254 = 23131753204781
BaseRepresentation
bin11010000100111101…
…100001101111000110
32200021101221001122220
4122010331201233012
5424321113302004
620510244233210
72010610352262
oct320475415706
980241831586
1028000525254
1110969626069
12551539b806
132843072b50
1414d8a890a2
15add31bdd9
hex684f61bc6

28000525254 has 32 divisors (see below), whose sum is σ = 60343521504. Its totient is φ = 8610589440.

The previous prime is 28000525249. The next prime is 28000525271. The reversal of 28000525254 is 45252500082.

It is a happy number.

28000525254 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34344 + ... + 239124.

It is an arithmetic number, because the mean of its divisors is an integer number (1885735047).

Almost surely, 228000525254 is an apocalyptic number.

28000525254 is an abundant number, since it is smaller than the sum of its proper divisors (32342996250).

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

28000525254 is a wasteful number, since it uses less digits than its factorization.

28000525254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206552.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 28000525254 in words is "twenty-eight billion, five hundred twenty-five thousand, two hundred fifty-four".

Divisors: 1 2 3 6 13 26 39 78 1753 3506 5259 10518 22789 45578 68367 136734 204781 409562 614343 1228686 2662153 5324306 7986459 15972918 358981093 717962186 1076943279 2153886558 4666754209 9333508418 14000262627 28000525254