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20029908 = 2233075437
BaseRepresentation
bin100110001101…
…0000111010100
31101200121212110
41030122013110
520111424113
61553151020
7332152143
oct114320724
941617773
1020029908
1110340848
12685b470
1341c3c22
14293575a
151b59bc3
hex131a1d4

20029908 has 24 divisors (see below), whose sum is σ = 46897312. Its totient is φ = 6653664.

The previous prime is 20029901. The next prime is 20029931. The reversal of 20029908 is 80992002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20029901) 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 7 ways as a sum of consecutive naturals, for example, 966 + ... + 6402.

Almost surely, 220029908 is an apocalyptic number.

It is an amenable number.

20029908 is an abundant number, since it is smaller than the sum of its proper divisors (26867404).

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

20029908 is a wasteful number, since it uses less digits than its factorization.

20029908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751 (or 5749 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 20029908 is about 4475.4785219013. The cubic root of 20029908 is about 271.5769989407.

The spelling of 20029908 in words is "twenty million, twenty-nine thousand, nine hundred eight".

Divisors: 1 2 3 4 6 12 307 614 921 1228 1842 3684 5437 10874 16311 21748 32622 65244 1669159 3338318 5007477 6676636 10014954 20029908