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2269980 = 2232512611
BaseRepresentation
bin1000101010001100011100
311021022211100
420222030130
51040114410
6120353100
725203006
oct10521434
94238740
102269980
111310519
12915790
136162ab
14431376
152ec8c0
hex22a31c

2269980 has 36 divisors (see below), whose sum is σ = 6886152. Its totient is φ = 605280.

The previous prime is 2269973. The next prime is 2269991. The reversal of 2269980 is 899622.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6126 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (191282).

22269980 is an apocalyptic number.

2269980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2269980 is an abundant number, since it is smaller than the sum of its proper divisors (4616172).

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

2269980 is a wasteful number, since it uses less digits than its factorization.

2269980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12626 (or 12621 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2269980 is about 1506.6452800842. The cubic root of 2269980 is about 131.4237969730.

It can be divided in two parts, 2269 and 980, that added together give a square (3249 = 572).

The spelling of 2269980 in words is "two million, two hundred sixty-nine thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 12611 25222 37833 50444 63055 75666 113499 126110 151332 189165 226998 252220 378330 453996 567495 756660 1134990 2269980