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20372035 = 517239671
BaseRepresentation
bin100110110110…
…1101001000011
31102100000011211
41031231221003
520203401120
62004350551
7335105455
oct115555103
942300154
1020372035
11105548a2
1269a5457
1342b3878
1429c42d5
151bc625a
hex136da43

20372035 has 8 divisors (see below), whose sum is σ = 25884576. Its totient is φ = 15338880.

The previous prime is 20372029. The next prime is 20372059. The reversal of 20372035 is 53027302.

It is a happy number.

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

It is not a de Polignac number, because 20372035 - 29 = 20371523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20371997 and 20372015.

It is an unprimeable number.

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, 119751 + ... + 119920.

It is an arithmetic number, because the mean of its divisors is an integer number (3235572).

Almost surely, 220372035 is an apocalyptic number.

20372035 is a deficient number, since it is larger than the sum of its proper divisors (5512541).

20372035 is a wasteful number, since it uses less digits than its factorization.

20372035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239693.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 20372035 is about 4513.5390770436. The cubic root of 20372035 is about 273.1145292692.

Adding to 20372035 its reverse (53027302), we get a palindrome (73399337).

The spelling of 20372035 in words is "twenty million, three hundred seventy-two thousand, thirty-five".

Divisors: 1 5 17 85 239671 1198355 4074407 20372035