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2105830 = 25316793
BaseRepresentation
bin1000000010000111100110
310221222122201
420002013212
51014341310
6113045114
723620306
oct10020746
93858581
102105830
111209161
1285679a
1358966c
143cb606
152b8e3a
hex2021e6

2105830 has 16 divisors (see below), whose sum is σ = 3913344. Its totient is φ = 815040.

The previous prime is 2105819. The next prime is 2105833. The reversal of 2105830 is 385012.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2105798 and 2105807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105833) 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, 3087 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (244584).

22105830 is an apocalyptic number.

2105830 is a deficient number, since it is larger than the sum of its proper divisors (1807514).

2105830 is a wasteful number, since it uses less digits than its factorization.

2105830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2105830 is about 1451.1478215537. The cubic root of 2105830 is about 128.1763113934.

The spelling of 2105830 in words is "two million, one hundred five thousand, eight hundred thirty".