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20712455702 = 238632680877
BaseRepresentation
bin10011010010100011…
…101111111000010110
31222110111010202201222
4103102203233320112
5314404342040302
613303135450342
71332162653141
oct232243577026
958414122658
1020712455702
118869706594
1240206869b2
131c51188563
141006b83058
1581359dda2
hex4d28efe16

20712455702 has 8 divisors (see below), whose sum is σ = 31076737776. Its totient is φ = 10353543112.

The previous prime is 20712455681. The next prime is 20712455707. The reversal of 20712455702 is 20755421702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712455707) 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 3 ways as a sum of consecutive naturals, for example, 1332713 + ... + 1348164.

It is an arithmetic number, because the mean of its divisors is an integer number (3884592222).

Almost surely, 220712455702 is an apocalyptic number.

20712455702 is a deficient number, since it is larger than the sum of its proper divisors (10364282074).

20712455702 is a wasteful number, since it uses less digits than its factorization.

20712455702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684742.

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 20712455702 in words is "twenty billion, seven hundred twelve million, four hundred fifty-five thousand, seven hundred two".

Divisors: 1 2 3863 7726 2680877 5361754 10356227851 20712455702