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20000550 = 2352133337
BaseRepresentation
bin100110001001…
…0111100100110
31101122010121010
41030102330212
520110004200
61552403050
7332000433
oct114227446
941563533
1020000550
1110320789
126846486
1341b375b
142928b8a
151b51150
hex1312f26

20000550 has 24 divisors (see below), whose sum is σ = 49601736. Its totient is φ = 5333440.

The previous prime is 20000543. The next prime is 20000567. The reversal of 20000550 is 5500002.

20000550 is nontrivially palindromic in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66519 + ... + 66818.

It is an arithmetic number, because the mean of its divisors is an integer number (2066739).

Almost surely, 220000550 is an apocalyptic number.

20000550 is an abundant number, since it is smaller than the sum of its proper divisors (29601186).

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

20000550 is a wasteful number, since it uses less digits than its factorization.

20000550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133352 (or 133347 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 20000550 is about 4472.1974464462. The cubic root of 20000550 is about 271.4442498528. Note that the first 3 decimals are identical.

Adding to 20000550 its reverse (5500002), we get a palindrome (25500552).

The spelling of 20000550 in words is "twenty million, five hundred fifty", and thus it is an aban number.

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 133337 266674 400011 666685 800022 1333370 2000055 3333425 4000110 6666850 10000275 20000550