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BaseRepresentation
bin10011000001111111…
…000100001100000110
31221202002221021122120
4103001333010030012
5313322201412402
613215404110410
71322245366110
oct230177041406
957662837576
1020434404102
118736763282
123b63535406
131c086a3998
14dbbc843b0
157e8e783bc
hex4c1fc4306

20434404102 has 64 divisors (see below), whose sum is σ = 47586299904. Its totient is φ = 5729185440.

The previous prime is 20434404101. The next prime is 20434404113. The reversal of 20434404102 is 20140443402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434404101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726277 + ... + 753887.

It is an arithmetic number, because the mean of its divisors is an integer number (743535936).

Almost surely, 220434404102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434404102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23793149952).

20434404102 is an abundant number, since it is smaller than the sum of its proper divisors (27151895802).

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

20434404102 is a wasteful number, since it uses less digits than its factorization.

20434404102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27953.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20434404102 its reverse (20140443402), we get a palindrome (40574847504).

The spelling of 20434404102 in words is "twenty billion, four hundred thirty-four million, four hundred four thousand, one hundred two".