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20402041210 = 25231031097901
BaseRepresentation
bin10011000000000011…
…100111000101111010
31221122212001002002221
4103000003213011322
5313240410304320
613212250314254
71321403326465
oct230003470572
957585032087
1020402041210
11871a469591
123b5472898a
131c01a82345
14db785c2dc
157e61d43aa
hex4c00e717a

20402041210 has 64 divisors (see below), whose sum is σ = 39052316160. Its totient is φ = 7658323200.

The previous prime is 20402041189. The next prime is 20402041213. The reversal of 20402041210 is 1214020402.

It is not an unprimeable number, because it can be changed into a prime (20402041213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2578260 + ... + 2586160.

It is an arithmetic number, because the mean of its divisors is an integer number (610192440).

Almost surely, 220402041210 is an apocalyptic number.

20402041210 is a deficient number, since it is larger than the sum of its proper divisors (18650274950).

20402041210 is a wasteful number, since it uses less digits than its factorization.

20402041210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20402041210 its reverse (1214020402), we get a palindrome (21616061612).

The spelling of 20402041210 in words is "twenty billion, four hundred two million, forty-one thousand, two hundred ten".

Divisors: 1 2 5 10 23 46 103 109 115 206 218 230 515 545 1030 1090 2369 2507 4738 5014 7901 11227 11845 12535 15802 22454 23690 25070 39505 56135 79010 112270 181723 258221 363446 516442 813803 861209 908615 1291105 1627606 1722418 1817230 2582210 4069015 4306045 8138030 8612090 18717469 19807807 37434938 39615614 88704527 93587345 99039035 177409054 187174690 198078070 443522635 887045270 2040204121 4080408242 10201020605 20402041210