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3042981 = 33432621
BaseRepresentation
bin1011100110111010100101
312201121012000
423212322211
51234333411
6145115513
734602444
oct13467245
95647160
103042981
111799267
121028b99
138270a6
14592d5b
15401956
hex2e6ea5

3042981 has 16 divisors (see below), whose sum is σ = 4614720. Its totient is φ = 1980720.

The previous prime is 3042971. The next prime is 3042997. The reversal of 3042981 is 1892403.

It is not a de Polignac number, because 3042981 - 29 = 3042469 is a prime.

It is a super-2 number, since 2×30429812 = 18519466732722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3042901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150 + ... + 2471.

It is an arithmetic number, because the mean of its divisors is an integer number (288420).

Almost surely, 23042981 is an apocalyptic number.

It is an amenable number.

3042981 is a deficient number, since it is larger than the sum of its proper divisors (1571739).

3042981 is a wasteful number, since it uses less digits than its factorization.

3042981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 3042981 is about 1744.4142283300. The cubic root of 3042981 is about 144.9104639469.

The spelling of 3042981 in words is "three million, forty-two thousand, nine hundred eighty-one".

Divisors: 1 3 9 27 43 129 387 1161 2621 7863 23589 70767 112703 338109 1014327 3042981