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20082430745 = 513308960473
BaseRepresentation
bin10010101101000000…
…011001001100011001
31220211120122011222022
4102231000121030121
5312112100240440
613120432104225
71310442562526
oct225500311431
956746564868
1020082430745
118576010503
123a85695075
131b807a9520
14d8722214d
157c80eecb5
hex4ad019319

20082430745 has 8 divisors (see below), whose sum is σ = 25952679816. Its totient is φ = 14830102656.

The previous prime is 20082430723. The next prime is 20082430789. The reversal of 20082430745 is 54703428002.

It can be written as a sum of positive squares in 4 ways, for example, as 13741849 + 20068688896 = 3707^2 + 141664^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20082430745 - 26 = 20082430681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154480172 + ... + 154480301.

It is an arithmetic number, because the mean of its divisors is an integer number (3244084977).

Almost surely, 220082430745 is an apocalyptic number.

It is an amenable number.

20082430745 is a deficient number, since it is larger than the sum of its proper divisors (5870249071).

20082430745 is a wasteful number, since it uses less digits than its factorization.

20082430745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308960491.

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 20082430745 its reverse (54703428002), we get a palindrome (74785858747).

The spelling of 20082430745 in words is "twenty billion, eighty-two million, four hundred thirty thousand, seven hundred forty-five".

Divisors: 1 5 13 65 308960473 1544802365 4016486149 20082430745