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20752119 = 34256199
BaseRepresentation
bin100111100101…
…0011011110111
31110001022120000
41033022123313
520303031434
62020442343
7341250543
oct117123367
943038500
1020752119
1110794413
126b493b3
1343b787b
142a82a23
151c4db99
hex13ca6f7

20752119 has 10 divisors (see below), whose sum is σ = 31000200. Its totient is φ = 13834692.

The previous prime is 20752091. The next prime is 20752133. The reversal of 20752119 is 91125702.

It is not a de Polignac number, because 20752119 - 29 = 20751607 is a prime.

It is a super-2 number, since 2×207521192 = 861300885980322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20752092 and 20752101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 128019 + ... + 128180.

It is an arithmetic number, because the mean of its divisors is an integer number (3100020).

Almost surely, 220752119 is an apocalyptic number.

20752119 is a deficient number, since it is larger than the sum of its proper divisors (10248081).

20752119 is an equidigital number, since it uses as much as digits as its factorization.

20752119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256211 (or 256202 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 20752119 is about 4555.4493741013. The cubic root of 20752119 is about 274.8025866922.

It can be divided in two parts, 207 and 52119, that added together give a triangular number (52326 = T323).

The spelling of 20752119 in words is "twenty million, seven hundred fifty-two thousand, one hundred nineteen".

Divisors: 1 3 9 27 81 256199 768597 2305791 6917373 20752119