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20560488 = 2331365899
BaseRepresentation
bin100111001101…
…1101001101000
31102200120200120
41032123221220
520230413423
62012403240
7336522054
oct116335150
942616616
1020560488
1110673443
126a76520
13434b590
142a32c64
151c11ee3
hex139ba68

20560488 has 32 divisors (see below), whose sum is σ = 55356000. Its totient is φ = 6326208.

The previous prime is 20560487. The next prime is 20560517. The reversal of 20560488 is 88406502.

It is not an unprimeable number, because it can be changed into a prime (20560487) by changing a digit.

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, 32638 + ... + 33261.

It is an arithmetic number, because the mean of its divisors is an integer number (1729875).

Almost surely, 220560488 is an apocalyptic number.

It is an amenable number.

20560488 is an abundant number, since it is smaller than the sum of its proper divisors (34795512).

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

20560488 is a wasteful number, since it uses less digits than its factorization.

20560488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65921 (or 65917 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 20560488 is about 4534.3674310757. The cubic root of 20560488 is about 273.9541010371.

The spelling of 20560488 in words is "twenty million, five hundred sixty thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 65899 131798 197697 263596 395394 527192 790788 856687 1581576 1713374 2570061 3426748 5140122 6853496 10280244 20560488