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2315980 = 225432693
BaseRepresentation
bin1000110101011011001100
311100122221001
420311123030
51043102410
6121350044
725454062
oct10653314
94318831
102315980
111342037
12938324
13631204
14444032
1530b33a
hex2356cc

2315980 has 24 divisors (see below), whose sum is σ = 4978512. Its totient is φ = 904512.

The previous prime is 2315959. The next prime is 2315981. The reversal of 2315980 is 895132.

2315980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2315981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (207438).

22315980 is an apocalyptic number.

2315980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315980 is an abundant number, since it is smaller than the sum of its proper divisors (2662532).

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

2315980 is a wasteful number, since it uses less digits than its factorization.

2315980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2315980 is about 1521.8344193768. The cubic root of 2315980 is about 132.3056126686.

The spelling of 2315980 in words is "two million, three hundred fifteen thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 2693 5386 10772 13465 26930 53860 115799 231598 463196 578995 1157990 2315980