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20273952 = 253211187
BaseRepresentation
bin100110101010…
…1101100100000
31102011000122010
41031111230200
520142231302
62002312520
7334216506
oct115255440
942130563
1020273952
1110498136
126958740
13427b02a
14299a676
151ba716c
hex1355b20

20273952 has 24 divisors (see below), whose sum is σ = 53219376. Its totient is φ = 6757952.

The previous prime is 20273951. The next prime is 20273963. The reversal of 20273952 is 25937202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×202739522 = 822066259396608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20273951) 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, 105498 + ... + 105689.

It is an arithmetic number, because the mean of its divisors is an integer number (2217474).

Almost surely, 220273952 is an apocalyptic number.

It is an amenable number.

20273952 is an abundant number, since it is smaller than the sum of its proper divisors (32945424).

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

20273952 is a wasteful number, since it uses less digits than its factorization.

20273952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211200 (or 211192 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20273952 is about 4502.6605468323. The cubic root of 20273952 is about 272.6755124398.

The spelling of 20273952 in words is "twenty million, two hundred seventy-three thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 211187 422374 633561 844748 1267122 1689496 2534244 3378992 5068488 6757984 10136976 20273952