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20102012088 = 23337139162859
BaseRepresentation
bin10010101110001011…
…000101110010111000
31220212221111000112020
4102232023011302320
5312132103341323
613122411514440
71311101166144
oct225613056270
956787430466
1020102012088
118586075234
123a90158a20
131b84874212
14d89a7c224
157c9bbbae3
hex4ae2c5cb8

20102012088 has 64 divisors (see below), whose sum is σ = 51984912000. Its totient is φ = 6472628352.

The previous prime is 20102012081. The next prime is 20102012089. The reversal of 20102012088 is 88021020102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102012081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42003 + ... + 204861.

It is an arithmetic number, because the mean of its divisors is an integer number (812264250).

Almost surely, 220102012088 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 20102012088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25992456000).

20102012088 is an abundant number, since it is smaller than the sum of its proper divisors (31882899912).

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

20102012088 is a wasteful number, since it uses less digits than its factorization.

20102012088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163044 (or 163040 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 20102012088 in words is "twenty billion, one hundred two million, twelve thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 37 74 111 139 148 222 278 296 417 444 556 834 888 1112 1668 3336 5143 10286 15429 20572 30858 41144 61716 123432 162859 325718 488577 651436 977154 1302872 1954308 3908616 6025783 12051566 18077349 22637401 24103132 36154698 45274802 48206264 67912203 72309396 90549604 135824406 144618792 181099208 271648812 543297624 837583837 1675167674 2512751511 3350335348 5025503022 6700670696 10051006044 20102012088