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20706352060 = 2252935700607
BaseRepresentation
bin10011010010001100…
…011101101110111100
31222110001122200010011
4103102030131232330
5314401311231220
613302400553004
71332060042232
oct232214355674
958401580104
1020706352060
118866217859
12401a622764
131c4cb2c334
141006034952
15812c9565a
hex4d231dbbc

20706352060 has 24 divisors (see below), whose sum is σ = 44982766080. Its totient is φ = 7996935744.

The previous prime is 20706352039. The next prime is 20706352061. The reversal of 20706352060 is 6025360702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706352061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17849724 + ... + 17850883.

It is an arithmetic number, because the mean of its divisors is an integer number (1874281920).

Almost surely, 220706352060 is an apocalyptic number.

20706352060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20706352060 is an abundant number, since it is smaller than the sum of its proper divisors (24276414020).

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

20706352060 is a wasteful number, since it uses less digits than its factorization.

20706352060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35700645 (or 35700643 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 20706352060 in words is "twenty billion, seven hundred six million, three hundred fifty-two thousand, sixty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 35700607 71401214 142802428 178503035 357006070 714012140 1035317603 2070635206 4141270412 5176588015 10353176030 20706352060