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2100320 = 25513127
BaseRepresentation
bin1000000000110001100000
310221201002122
420000301200
51014202240
6113003412
723565245
oct10006140
93851078
102100320
111205002
12853568
13586cc1
143c95cc
152b74b5
hex200c60

2100320 has 24 divisors (see below), whose sum is σ = 4962384. Its totient is φ = 840064.

The previous prime is 2100313. The next prime is 2100353. The reversal of 2100320 is 230012.

It is a super-2 number, since 2×21003202 = 8822688204800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 2100298 and 2100307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (206766).

22100320 is an apocalyptic number.

2100320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100320 is an abundant number, since it is smaller than the sum of its proper divisors (2862064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100320 is a wasteful number, since it uses less digits than its factorization.

2100320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142 (or 13134 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 2100320 is about 1449.2480809026. The cubic root of 2100320 is about 128.0644206975.

Adding to 2100320 its reverse (230012), we get a palindrome (2330332).

The spelling of 2100320 in words is "two million, one hundred thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 13127 26254 52508 65635 105016 131270 210032 262540 420064 525080 1050160 2100320