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20767325 = 52830693
BaseRepresentation
bin100111100111…
…0001001011101
31110002002102012
41033032021131
520304023300
62021041005
7341343065
oct117161135
943062365
1020767325
11107a4887
126b56165
1343c1777
142a883a5
151c53435
hex13ce25d

20767325 has 6 divisors (see below), whose sum is σ = 25751514. Its totient is φ = 16613840.

The previous prime is 20767301. The next prime is 20767333. The reversal of 20767325 is 52376702.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 454276 + 20313049 = 674^2 + 4507^2 .

It is not a de Polignac number, because 20767325 - 212 = 20763229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20767291 and 20767300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415322 + ... + 415371.

It is an arithmetic number, because the mean of its divisors is an integer number (4291919).

Almost surely, 220767325 is an apocalyptic number.

20767325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20767325 is a deficient number, since it is larger than the sum of its proper divisors (4984189).

20767325 is an equidigital number, since it uses as much as digits as its factorization.

20767325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830703 (or 830698 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 20767325 is about 4557.1180585980. The cubic root of 20767325 is about 274.8696903282.

The spelling of 20767325 in words is "twenty million, seven hundred sixty-seven thousand, three hundred twenty-five".

Divisors: 1 5 25 830693 4153465 20767325