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2543980 = 225311409
BaseRepresentation
bin1001101101000101101100
311210020200111
421231011230
51122401410
6130305404
730423565
oct11550554
94706614
102543980
11148836a
12a28264
136b0c1a
144a316c
15353b8a
hex26d16c

2543980 has 24 divisors (see below), whose sum is σ = 5372640. Its totient is φ = 1011840.

The previous prime is 2543971. The next prime is 2544011. The reversal of 2543980 is 893452.

2543980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 6016 + ... + 6424.

It is an arithmetic number, because the mean of its divisors is an integer number (223860).

22543980 is an apocalyptic number.

2543980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543980 is an abundant number, since it is smaller than the sum of its proper divisors (2828660).

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

2543980 is a wasteful number, since it uses less digits than its factorization.

2543980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2543980 is about 1594.9858933545. The cubic root of 2543980 is about 136.5121261931.

The spelling of 2543980 in words is "two million, five hundred forty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 311 409 622 818 1244 1555 1636 2045 3110 4090 6220 8180 127199 254398 508796 635995 1271990 2543980