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7828361 = 19412019
BaseRepresentation
bin11101110111001110001001
3112201201111022
4131313032021
54001001421
6435442225
7123353132
oct35671611
915651438
107828361
114467622
122756375
131811288
14107ac89
15a497ab
hex777389

7828361 has 4 divisors (see below), whose sum is σ = 8240400. Its totient is φ = 7416324.

The previous prime is 7828357. The next prime is 7828369. The reversal of 7828361 is 1638287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7828361 - 22 = 7828357 is a prime.

It is a super-2 number, since 2×78283612 = 122566471892642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7828369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205991 + ... + 206028.

It is an arithmetic number, because the mean of its divisors is an integer number (2060100).

Almost surely, 27828361 is an apocalyptic number.

It is an amenable number.

7828361 is a deficient number, since it is larger than the sum of its proper divisors (412039).

7828361 is a wasteful number, since it uses less digits than its factorization.

7828361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412038.

The product of its digits is 16128, while the sum is 35.

The square root of 7828361 is about 2797.9208351917. The cubic root of 7828361 is about 198.5593221551.

The spelling of 7828361 in words is "seven million, eight hundred twenty-eight thousand, three hundred sixty-one".

Divisors: 1 19 412019 7828361