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680408124 = 223117696703
BaseRepresentation
bin101000100011100…
…011010000111100
31202102022022110220
4220203203100330
52343141024444
6151303301340
722601242104
oct5043432074
91672268426
10680408124
1131a088770
1216ba4a850
13aac6c976
1466518204
153eb02619
hex288e343c

680408124 has 48 divisors (see below), whose sum is σ = 1734458880. Its totient is φ = 205885440.

The previous prime is 680408111. The next prime is 680408159. The reversal of 680408124 is 421804086.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 98157 + ... + 104859.

It is an arithmetic number, because the mean of its divisors is an integer number (36134560).

Almost surely, 2680408124 is an apocalyptic number.

It is an amenable number.

680408124 is an abundant number, since it is smaller than the sum of its proper divisors (1054050756).

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

680408124 is a wasteful number, since it uses less digits than its factorization.

680408124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7490 (or 7488 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 680408124 is about 26084.6338674707. The cubic root of 680408124 is about 879.5418258859.

It can be divided in two parts, 680 and 408124, that added together give a palindrome (408804).

The spelling of 680408124 in words is "six hundred eighty million, four hundred eight thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 769 1538 2307 3076 4614 6703 8459 9228 13406 16918 20109 25377 26812 33836 40218 50754 73733 80436 101508 147466 221199 294932 442398 884796 5154607 10309214 15463821 20618428 30927642 56700677 61855284 113401354 170102031 226802708 340204062 680408124