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28053027612 = 223219926914557
BaseRepresentation
bin11010001000000101…
…110011101100011100
32200102001201110100200
4122020011303230130
5424423033340422
620515401423500
72012115541341
oct321005635434
980361643320
1028053027612
1110996225945
12552aa9ab90
132850bc622c
141501a347c8
15ae2c3d2ac
hex688173b1c

28053027612 has 72 divisors (see below), whose sum is σ = 71538012000. Its totient is φ = 9268795008.

The previous prime is 28053027601. The next prime is 28053027631. The reversal of 28053027612 is 21672035082.

28053027612 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 30 + 2 + 7 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1919838 + ... + 1934394.

It is an arithmetic number, because the mean of its divisors is an integer number (993583500).

Almost surely, 228053027612 is an apocalyptic number.

It is an amenable number.

28053027612 is an abundant number, since it is smaller than the sum of its proper divisors (43484984388).

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

28053027612 is a wasteful number, since it uses less digits than its factorization.

28053027612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035 (or 15030 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 28053027612 in words is "twenty-eight billion, fifty-three million, twenty-seven thousand, six hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 199 269 398 538 597 796 807 1076 1194 1614 1791 2388 2421 3228 3582 4842 7164 9684 14557 29114 43671 53531 58228 87342 107062 131013 160593 174684 214124 262026 321186 481779 524052 642372 963558 1927116 2896843 3915833 5793686 7831666 8690529 11587372 11747499 15663332 17381058 23494998 26071587 34762116 35242497 46989996 52143174 70484994 104286348 140969988 779250767 1558501534 2337752301 3117003068 4675504602 7013256903 9351009204 14026513806 28053027612