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680223040980 = 223571619578669
BaseRepresentation
bin10011110011000000111…
…00111110010111010100
32102000202220122210012020
421321200130332113110
542121044044302410
61240253512253140
7100100363306610
oct11714034762724
92360686583166
10680223040980
1124253219a66a
12ab9b93a11b0
134c1b6055c22
1424ccc8bc340
1512a62be7a70
hex9e6073e5d4

680223040980 has 48 divisors (see below), whose sum is σ = 2176713732480. Its totient is φ = 155479552128.

The previous prime is 680223040961. The next prime is 680223040993. The reversal of 680223040980 is 89040322086.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809788915 + ... + 809789754.

It is an arithmetic number, because the mean of its divisors is an integer number (45348202760).

Almost surely, 2680223040980 is an apocalyptic number.

680223040980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680223040980 is an abundant number, since it is smaller than the sum of its proper divisors (1496490691500).

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

680223040980 is a wasteful number, since it uses less digits than its factorization.

680223040980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619578688 (or 1619578686 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 680223040980 in words is "six hundred eighty billion, two hundred twenty-three million, forty thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 1619578669 3239157338 4858736007 6478314676 8097893345 9717472014 11337050683 16195786690 19434944028 22674101366 24293680035 32391573380 34011152049 45348202732 48587360070 56685253415 68022304098 97174720140 113370506830 136044608196 170055760245 226741013660 340111520490 680223040980