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2195228 = 22778401
BaseRepresentation
bin1000010111111100011100
311010112021202
420113330130
51030221403
6115015032
724442040
oct10277434
94115252
102195228
11126a342
1289a478
135bb269
14412020
152d5688
hex217f1c

2195228 has 12 divisors (see below), whose sum is σ = 4390512. Its totient is φ = 940800.

The previous prime is 2195201. The next prime is 2195233. The reversal of 2195228 is 8225912.

2195228 = 5572 + 5582 + ... + 5632.

2195228 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2195228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39173 + ... + 39228.

It is an arithmetic number, because the mean of its divisors is an integer number (365876).

22195228 is an apocalyptic number.

2195228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2195228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2195228 is a wasteful number, since it uses less digits than its factorization.

2195228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78412 (or 78410 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2195228 is about 1481.6301832779. The cubic root of 2195228 is about 129.9650399089.

It can be divided in two parts, 21952 and 28, that multiplied together give a 4-th power (614656 = 284).

The spelling of 2195228 in words is "two million, one hundred ninety-five thousand, two hundred twenty-eight".

Divisors: 1 2 4 7 14 28 78401 156802 313604 548807 1097614 2195228