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20607069 = 37981289
BaseRepresentation
bin100111010011…
…1000001011101
31102202221120210
41032213001131
520233411234
62013403033
7340104630
oct116470135
942687523
1020607069
11106a543a
126a99479
134366842
142a45c17
151c20be9
hex13a705d

20607069 has 8 divisors (see below), whose sum is σ = 31401280. Its totient is φ = 11775456.

The previous prime is 20607061. The next prime is 20607073. The reversal of 20607069 is 96070602.

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

It is not a de Polignac number, because 20607069 - 23 = 20607061 is a prime.

It is a super-2 number, since 2×206070692 = 849302585541522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20607061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490624 + ... + 490665.

It is an arithmetic number, because the mean of its divisors is an integer number (3925160).

Almost surely, 220607069 is an apocalyptic number.

It is an amenable number.

20607069 is a deficient number, since it is larger than the sum of its proper divisors (10794211).

20607069 is an equidigital number, since it uses as much as digits as its factorization.

20607069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981299.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20607069 is about 4539.5009637624. The cubic root of 20607069 is about 274.1608313948.

The spelling of 20607069 in words is "twenty million, six hundred seven thousand, sixty-nine".

Divisors: 1 3 7 21 981289 2943867 6869023 20607069