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3082981 = 11319041
BaseRepresentation
bin1011110000101011100101
312210122001111
423300223211
51242123411
6150025021
735130166
oct13605345
95718044
103082981
111816320
121048171
1383c365
145a376d
1540d721
hex2f0ae5

3082981 has 8 divisors (see below), whose sum is σ = 3472128. Its totient is φ = 2712000.

The previous prime is 3082949. The next prime is 3082993. The reversal of 3082981 is 1892803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3082981 - 25 = 3082949 is a prime.

It is a super-2 number, since 2×30829812 = 19009543692722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an Ulam number.

3082981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3082901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180 + ... + 4861.

It is an arithmetic number, because the mean of its divisors is an integer number (434016).

Almost surely, 23082981 is an apocalyptic number.

3082981 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3082981 is a deficient number, since it is larger than the sum of its proper divisors (389147).

3082981 is a wasteful number, since it uses less digits than its factorization.

3082981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9083.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3082981 is about 1755.8419632757. The cubic root of 3082981 is about 145.5426515332.

The spelling of 3082981 in words is "three million, eighty-two thousand, nine hundred eighty-one".

Divisors: 1 11 31 341 9041 99451 280271 3082981