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20430829727 = 711709374239
BaseRepresentation
bin10011000001110001…
…011011100010011111
31221201212012200112022
4103001301123202133
5313320243022402
613215155330355
71322203121150
oct230161334237
957655180468
1020430829727
118734741850
123b622b09bb
131c07a21a79
14dbb5d3927
157e89be2a2
hex4c1c5b89f

20430829727 has 16 divisors (see below), whose sum is σ = 25508198400. Its totient is φ = 15897630240.

The previous prime is 20430829723. The next prime is 20430829729. The reversal of 20430829727 is 72792803402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20430829727 - 22 = 20430829723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430829723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132527 + ... + 241712.

It is an arithmetic number, because the mean of its divisors is an integer number (1594262400).

Almost surely, 220430829727 is an apocalyptic number.

20430829727 is a deficient number, since it is larger than the sum of its proper divisors (5077368673).

20430829727 is a wasteful number, since it uses less digits than its factorization.

20430829727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374966.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 20430829727 in words is "twenty billion, four hundred thirty million, eight hundred twenty-nine thousand, seven hundred twenty-seven".

Divisors: 1 7 11 77 709 4963 7799 54593 374239 2619673 4116629 28816403 265335451 1857348157 2918689961 20430829727