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7830830 = 257111869
BaseRepresentation
bin11101110111110100101110
3112201211212202
4131313310232
54001041310
6435501502
7123363260
oct35676456
915654782
107830830
114469467
122757892
131812437
14107bb30
15a4a3a5
hex777d2e

7830830 has 16 divisors (see below), whose sum is σ = 16109280. Its totient is φ = 2684832.

The previous prime is 7830827. The next prime is 7830847. The reversal of 7830830 is 380387.

It is a super-2 number, since 2×78308302 = 122643796977800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7830793 and 7830802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55865 + ... + 56004.

It is an arithmetic number, because the mean of its divisors is an integer number (1006830).

Almost surely, 27830830 is an apocalyptic number.

7830830 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7830830 is an abundant number, since it is smaller than the sum of its proper divisors (8278450).

7830830 is a wasteful number, since it uses less digits than its factorization.

7830830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111883.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 7830830 is about 2798.3620208972. The cubic root of 7830830 is about 198.5801946143.

The spelling of 7830830 in words is "seven million, eight hundred thirty thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 111869 223738 559345 783083 1118690 1566166 3915415 7830830