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2180330 = 25474639
BaseRepresentation
bin1000010100010011101010
311002202211222
420110103222
51024232310
6114422042
724350435
oct10242352
94082758
102180330
11125a129
12891922
135b4549
1440a81c
152d1055
hex2144ea

2180330 has 16 divisors (see below), whose sum is σ = 4008960. Its totient is φ = 853392.

The previous prime is 2180329. The next prime is 2180333. The reversal of 2180330 is 330812.

It is a junction number, because it is equal to n+sod(n) for n = 2180299 and 2180308.

It is not an unprimeable number, because it can be changed into a prime (2180333) 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, 1850 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (250560).

22180330 is an apocalyptic number.

2180330 is a deficient number, since it is larger than the sum of its proper divisors (1828630).

2180330 is a wasteful number, since it uses less digits than its factorization.

2180330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2180330 is about 1476.5940538957. The cubic root of 2180330 is about 129.6703680374.

It can be divided in two parts, 2180 and 330, that multiplied together give a triangular number (719400 = T1199).

The spelling of 2180330 in words is "two million, one hundred eighty thousand, three hundred thirty".

Divisors: 1 2 5 10 47 94 235 470 4639 9278 23195 46390 218033 436066 1090165 2180330