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564461620 = 22528223081
BaseRepresentation
bin100001101001010…
…000000000110100
31110100010121202221
4201221100000310
52124000232440
6132002212124
716662562462
oct4151200064
91410117687
10564461620
1126a695408
12139054044
138cc34a78
1454d75832
153484cd4a
hex21a50034

564461620 has 12 divisors (see below), whose sum is σ = 1185369444. Its totient is φ = 225784640.

The previous prime is 564461567. The next prime is 564461627. The reversal of 564461620 is 26164465.

It can be written as a sum of positive squares in 2 ways, for example, as 255616144 + 308845476 = 15988^2 + 17574^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564461627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14111521 + ... + 14111560.

It is an arithmetic number, because the mean of its divisors is an integer number (98780787).

Almost surely, 2564461620 is an apocalyptic number.

It is an amenable number.

564461620 is an abundant number, since it is smaller than the sum of its proper divisors (620907824).

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

564461620 is a wasteful number, since it uses less digits than its factorization.

564461620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28223090 (or 28223088 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 564461620 is about 23758.4010404741. The cubic root of 564461620 is about 826.4402732315.

The spelling of 564461620 in words is "five hundred sixty-four million, four hundred sixty-one thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 28223081 56446162 112892324 141115405 282230810 564461620