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20314837 = 1011971021
BaseRepresentation
bin100110101111…
…1101011010101
31102020002201101
41031133223111
520200033322
62003230101
7334446634
oct115375325
942202641
1020314837
1110515924
126978331
13429381a
1429ab51b
151bb4327
hex135fad5

20314837 has 8 divisors (see below), whose sum is σ = 20640312. Its totient is φ = 19992000.

The previous prime is 20314829. The next prime is 20314841. The reversal of 20314837 is 73841302.

It can be written as a sum of positive squares in 4 ways, for example, as 15256836 + 5058001 = 3906^2 + 2249^2 .

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 20314837 - 23 = 20314829 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 (20314867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19387 + ... + 20407.

It is an arithmetic number, because the mean of its divisors is an integer number (2580039).

Almost surely, 220314837 is an apocalyptic number.

It is an amenable number.

20314837 is a deficient number, since it is larger than the sum of its proper divisors (325475).

20314837 is a wasteful number, since it uses less digits than its factorization.

20314837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20314837 is about 4507.1983537448. The cubic root of 20314837 is about 272.8586843032.

The spelling of 20314837 in words is "twenty million, three hundred fourteen thousand, eight hundred thirty-seven".

Divisors: 1 101 197 1021 19897 103121 201137 20314837