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20039272 = 2311227719
BaseRepresentation
bin100110001110…
…0011001101000
31101201002201021
41030130121220
520112224042
61553302224
7332221351
oct114343150
941632637
1020039272
1110347890
126864974
1341c8276
142938d28
151b5c867
hex131c668

20039272 has 16 divisors (see below), whose sum is σ = 40989600. Its totient is φ = 9108720.

The previous prime is 20039269. The next prime is 20039273. The reversal of 20039272 is 27293002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113772 + ... + 113947.

It is an arithmetic number, because the mean of its divisors is an integer number (2561850).

Almost surely, 220039272 is an apocalyptic number.

20039272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20039272 is an abundant number, since it is smaller than the sum of its proper divisors (20950328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20039272 is a wasteful number, since it uses less digits than its factorization.

20039272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227736 (or 227732 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20039272 is about 4476.5245447780. The cubic root of 20039272 is about 271.6193131778.

The spelling of 20039272 in words is "twenty million, thirty-nine thousand, two hundred seventy-two".

Divisors: 1 2 4 8 11 22 44 88 227719 455438 910876 1821752 2504909 5009818 10019636 20039272