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3830981 = 71124523
BaseRepresentation
bin1110100111010011000101
321012122010012
432213103011
51440042411
6214040005
744364020
oct16472305
97178105
103830981
112187300
121349005
13a4196b
1471a1b7
1550a18b
hex3a74c5

3830981 has 12 divisors (see below), whose sum is σ = 4813536. Its totient is φ = 2984520.

The previous prime is 3830977. The next prime is 3831007. The reversal of 3830981 is 1890383.

3830981 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3830981 - 22 = 3830977 is a prime.

It is a super-2 number, since 2×38309812 = 29352830844722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

3830981 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3830881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1415 + ... + 3108.

It is an arithmetic number, because the mean of its divisors is an integer number (401128).

Almost surely, 23830981 is an apocalyptic number.

It is an amenable number.

3830981 is a deficient number, since it is larger than the sum of its proper divisors (982555).

3830981 is a wasteful number, since it uses less digits than its factorization.

3830981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552 (or 4541 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 3830981 is about 1957.2891968230. The cubic root of 3830981 is about 156.4720116532.

The spelling of 3830981 in words is "three million, eight hundred thirty thousand, nine hundred eighty-one".

Divisors: 1 7 11 77 121 847 4523 31661 49753 348271 547283 3830981