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2194972 = 2213217191
BaseRepresentation
bin1000010111111000011100
311010111221021
420113320130
51030214342
6115013524
724441223
oct10277034
94114837
102194972
11126a12a
1289a2a4
135bb100
14411cba
152d5567
hex217e1c

2194972 has 36 divisors (see below), whose sum is σ = 4427136. Its totient is φ = 948480.

The previous prime is 2194967. The next prime is 2194979. The reversal of 2194972 is 2794912.

It is a happy number.

2194972 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11397 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (122976).

22194972 is an apocalyptic number.

It is an amenable number.

2194972 is an abundant number, since it is smaller than the sum of its proper divisors (2232164).

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

2194972 is a wasteful number, since it uses less digits than its factorization.

2194972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 223 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 2194972 is about 1481.5437894305. The cubic root of 2194972 is about 129.9599876860.

The spelling of 2194972 in words is "two million, one hundred ninety-four thousand, nine hundred seventy-two".

Divisors: 1 2 4 13 17 26 34 52 68 169 191 221 338 382 442 676 764 884 2483 2873 3247 4966 5746 6494 9932 11492 12988 32279 42211 64558 84422 129116 168844 548743 1097486 2194972