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20367085 = 57575381
BaseRepresentation
bin100110110110…
…0011011101101
31102022202101111
41031230123231
520203221320
62004312021
7335055154
oct115543355
942282344
1020367085
1110551102
1269a2611
1342b153b
1429c259b
151bc4a5a
hex136c6ed

20367085 has 8 divisors (see below), whose sum is σ = 24477336. Its totient is φ = 16269120.

The previous prime is 20367047. The next prime is 20367091. The reversal of 20367085 is 58076302.

It can be written as a sum of positive squares in 4 ways, for example, as 1687401 + 18679684 = 1299^2 + 4322^2 .

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

It is not a de Polignac number, because 20367085 - 215 = 20334317 is a prime.

It is a super-4 number, since 4×203670854 (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent 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, 1095 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (3059667).

Almost surely, 220367085 is an apocalyptic number.

It is an amenable number.

20367085 is a deficient number, since it is larger than the sum of its proper divisors (4110251).

20367085 is an equidigital number, since it uses as much as digits as its factorization.

20367085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20367085 is about 4512.9906935424. The cubic root of 20367085 is about 273.0924070081.

The spelling of 20367085 in words is "twenty million, three hundred sixty-seven thousand, eighty-five".

Divisors: 1 5 757 3785 5381 26905 4073417 20367085