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20076245 = 571035569
BaseRepresentation
bin100110010010…
…1011011010101
31101202222102122
41030211123111
520114414440
61554145325
7332434220
oct114453325
941688378
1020076245
1110372642
126882245
13420c047
1429485b7
151b687b5
hex13256d5

20076245 has 16 divisors (see below), whose sum is σ = 27805440. Its totient is φ = 13630464.

The previous prime is 20076233. The next prime is 20076247. The reversal of 20076245 is 54267002.

It is a cyclic number.

It is not a de Polignac number, because 20076245 - 24 = 20076229 is a prime.

It is a super-2 number, since 2×200762452 = 806111226600050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20076247) 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 15 ways as a sum of consecutive naturals, for example, 821 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (1737840).

Almost surely, 220076245 is an apocalyptic number.

It is an amenable number.

20076245 is a deficient number, since it is larger than the sum of its proper divisors (7729195).

20076245 is a wasteful number, since it uses less digits than its factorization.

20076245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20076245 is about 4480.6522962622. The cubic root of 20076245 is about 271.7862588784.

The spelling of 20076245 in words is "twenty million, seventy-six thousand, two hundred forty-five".

Divisors: 1 5 7 35 103 515 721 3605 5569 27845 38983 194915 573607 2868035 4015249 20076245