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20313030304 = 2571671912843
BaseRepresentation
bin10010111010110000…
…000011111010100000
31221102122112212002201
4102322300003322200
5313100113432204
613155350422544
71316242623460
oct227260037240
957378485081
1020313030304
1186841a3356
123b2a961a54
131bb94b8678
14da9acbba0
157dd4a09a4
hex4bac03ea0

20313030304 has 96 divisors (see below), whose sum is σ = 46234976256. Its totient is φ = 8605121280.

The previous prime is 20313030293. The next prime is 20313030307. The reversal of 20313030304 is 40303031302.

It is not an unprimeable number, because it can be changed into a prime (20313030307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7143507 + ... + 7146349.

It is an arithmetic number, because the mean of its divisors is an integer number (481614336).

Almost surely, 220313030304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313030304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23117488128).

20313030304 is an abundant number, since it is smaller than the sum of its proper divisors (25921945952).

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

20313030304 is a wasteful number, since it uses less digits than its factorization.

20313030304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20313030304 its reverse (40303031302), we get a palindrome (60616061606).

The spelling of 20313030304 in words is "twenty billion, three hundred thirteen million, thirty thousand, three hundred four".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 167 191 224 334 382 668 764 1169 1336 1337 1528 2338 2672 2674 2843 3056 4676 5344 5348 5686 6112 9352 10696 11372 18704 19901 21392 22744 31897 37408 39802 42784 45488 63794 79604 90976 127588 159208 223279 255176 318416 446558 474781 510352 543013 636832 893116 949562 1020704 1086026 1786232 1899124 2172052 3323467 3572464 3798248 3801091 4344104 6646934 7144928 7596496 7602182 8688208 13293868 15192992 15204364 17376416 26587736 30408728 53175472 60817456 90683171 106350944 121634912 181366342 362732684 634782197 725465368 1269564394 1450930736 2539128788 2901861472 5078257576 10156515152 20313030304