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2220960980 = 225741386927
BaseRepresentation
bin1000010001100001…
…0010110011010100
312201210010111201002
42010120102303110
514022031222410
61004214522432
7106015566620
oct20430226324
95653114632
102220960980
11a3a746947
1251b966418
132951902c4
14170d76180
15ceeac7a5
hex84612cd4

2220960980 has 48 divisors (see below), whose sum is σ = 5460327936. Its totient is φ = 742897920.

The previous prime is 2220960961. The next prime is 2220961019. The reversal of 2220960980 is 890690222.

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, 187724 + ... + 199203.

It is an arithmetic number, because the mean of its divisors is an integer number (113756832).

Almost surely, 22220960980 is an apocalyptic number.

2220960980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220960980 is an abundant number, since it is smaller than the sum of its proper divisors (3239366956).

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

2220960980 is a wasteful number, since it uses less digits than its factorization.

2220960980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386984 (or 386982 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2220960980 is about 47127.0726865143. The cubic root of 2220960980 is about 1304.7089538504.

The spelling of 2220960980 in words is "two billion, two hundred twenty million, nine hundred sixty thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 41 70 82 140 164 205 287 410 574 820 1148 1435 2870 5740 386927 773854 1547708 1934635 2708489 3869270 5416978 7738540 10833956 13542445 15864007 27084890 31728014 54169780 63456028 79320035 111048049 158640070 222096098 317280140 444192196 555240245 1110480490 2220960980