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28610312052 = 22373110987063
BaseRepresentation
bin11010101001010011…
…101011011101110100
32201211220100102220010
4122221103223131310
5432043214441202
621050550140220
72031663432330
oct325123533564
981756312803
1028610312052
11111518589a3
125665651670
13290c4b723a
141555a5c7c0
15b26b1e76c
hex6a94eb774

28610312052 has 48 divisors (see below), whose sum is σ = 78755274752. Its totient is φ = 7910684640.

The previous prime is 28610312051. The next prime is 28610312113. The reversal of 28610312052 is 25021301682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28610312051) 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, 5490928 + ... + 5496135.

Almost surely, 228610312052 is an apocalyptic number.

It is an amenable number.

28610312052 is an abundant number, since it is smaller than the sum of its proper divisors (50144962700).

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

28610312052 is a wasteful number, since it uses less digits than its factorization.

28610312052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987108 (or 10987106 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 28610312052 in words is "twenty-eight billion, six hundred ten million, three hundred twelve thousand, fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 31 42 62 84 93 124 186 217 372 434 651 868 1302 2604 10987063 21974126 32961189 43948252 65922378 76909441 131844756 153818882 230728323 307637764 340598953 461456646 681197906 922913292 1021796859 1362395812 2043593718 2384192671 4087187436 4768385342 7152578013 9536770684 14305156026 28610312052