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20480052 = 2237432297
BaseRepresentation
bin100111000100…
…0000000110100
31102112111100110
41032020000310
520220330202
62010543020
7336035415
oct116100064
942474313
1020480052
1110618a6a
126a37a70
134320a98
142a1180c
151be826c
hex1388034

20480052 has 24 divisors (see below), whose sum is σ = 47871936. Its totient is φ = 6814528.

The previous prime is 20480041. The next prime is 20480059. The reversal of 20480052 is 25008402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7768 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (1994664).

Almost surely, 220480052 is an apocalyptic number.

It is an amenable number.

20480052 is an abundant number, since it is smaller than the sum of its proper divisors (27391884).

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

20480052 is a wasteful number, since it uses less digits than its factorization.

20480052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20480052 is about 4525.4891448329. The cubic root of 20480052 is about 273.5963830273.

Adding to 20480052 its reverse (25008402), we get a palindrome (45488454).

The spelling of 20480052 in words is "twenty million, four hundred eighty thousand, fifty-two".

Divisors: 1 2 3 4 6 12 743 1486 2229 2297 2972 4458 4594 6891 8916 9188 13782 27564 1706671 3413342 5120013 6826684 10240026 20480052