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2687260 = 225134363
BaseRepresentation
bin1010010000000100011100
312001112020011
422100010130
51141443020
6133333004
731561402
oct12200434
95045204
102687260
111575a84
12a97164
137311c4
144dd472
1538135a
hex29011c

2687260 has 12 divisors (see below), whose sum is σ = 5643288. Its totient is φ = 1074896.

The previous prime is 2687257. The next prime is 2687261. The reversal of 2687260 is 627862.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67162 + ... + 67201.

It is an arithmetic number, because the mean of its divisors is an integer number (470274).

22687260 is an apocalyptic number.

2687260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2687260 is an abundant number, since it is smaller than the sum of its proper divisors (2956028).

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

2687260 is a wasteful number, since it uses less digits than its factorization.

2687260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134372 (or 134370 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2687260 is about 1639.2864301275. The cubic root of 2687260 is about 139.0283053996.

The spelling of 2687260 in words is "two million, six hundred eighty-seven thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 134363 268726 537452 671815 1343630 2687260