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20133646 = 213259567
BaseRepresentation
bin100110011001…
…1011100001110
31101212220011121
41030303130032
520123234041
61555311154
7333063451
oct114633416
941786147
1020133646
1110401785
1268ab4ba
13422c200
142961498
151b7a7d1
hex133370e

20133646 has 12 divisors (see below), whose sum is σ = 32702832. Its totient is φ = 9292296.

The previous prime is 20133629. The next prime is 20133649. The reversal of 20133646 is 64633102.

It is a self number, because there is not a number n which added to its sum of digits gives 20133646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133649) 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 5 ways as a sum of consecutive naturals, for example, 29446 + ... + 30121.

It is an arithmetic number, because the mean of its divisors is an integer number (2725236).

Almost surely, 220133646 is an apocalyptic number.

20133646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20133646 is a deficient number, since it is larger than the sum of its proper divisors (12569186).

20133646 is a wasteful number, since it uses less digits than its factorization.

20133646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59595 (or 59582 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20133646 is about 4487.0531532399. The cubic root of 20133646 is about 272.0450383177.

Adding to 20133646 its reverse (64633102), we get a palindrome (84766748).

The spelling of 20133646 in words is "twenty million, one hundred thirty-three thousand, six hundred forty-six".

Divisors: 1 2 13 26 169 338 59567 119134 774371 1548742 10066823 20133646