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3831825 = 352192689
BaseRepresentation
bin1110100111100000010001
321012200021110
432213200101
51440104300
6214043533
744366334
oct16474021
97180243
103831825
1121879a8
1213495a9
13a4216a
1471a61b
1550a550
hex3a7811

3831825 has 24 divisors (see below), whose sum is σ = 6671200. Its totient is φ = 1935360.

The previous prime is 3831811. The next prime is 3831827. The reversal of 3831825 is 5281383.

It is a happy number.

It is not a de Polignac number, because 3831825 - 221 = 1734673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3831792 and 3831801.

It is not an unprimeable number, because it can be changed into a prime (3831827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81 + ... + 2769.

Almost surely, 23831825 is an apocalyptic number.

It is an amenable number.

3831825 is a deficient number, since it is larger than the sum of its proper divisors (2839375).

3831825 is a wasteful number, since it uses less digits than its factorization.

3831825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2716 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 3831825 is about 1957.5047892662. The cubic root of 3831825 is about 156.4835015458.

It can be divided in two parts, 3831 and 825, that added together give a triangular number (4656 = T96).

The spelling of 3831825 in words is "three million, eight hundred thirty-one thousand, eight hundred twenty-five".

Divisors: 1 3 5 15 19 25 57 75 95 285 475 1425 2689 8067 13445 40335 51091 67225 153273 201675 255455 766365 1277275 3831825