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4220380 = 225892371
BaseRepresentation
bin10000000110010111011100
321221102021101
4100012113130
52040023010
6230242444
750605213
oct20062734
97842241
104220380
11242291a
1214b6424
13b49c88
147bc07a
1558573a
hex4065dc

4220380 has 24 divisors (see below), whose sum is σ = 8966160. Its totient is φ = 1668480.

The previous prime is 4220357. The next prime is 4220387. The reversal of 4220380 is 830224.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220387) 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, 595 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (373590).

Almost surely, 24220380 is an apocalyptic number.

It is an amenable number.

4220380 is an abundant number, since it is smaller than the sum of its proper divisors (4745780).

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

4220380 is a wasteful number, since it uses less digits than its factorization.

4220380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4220380 is about 2054.3563468882. The cubic root of 4220380 is about 161.6034093160.

The spelling of 4220380 in words is "four million, two hundred twenty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 89 178 356 445 890 1780 2371 4742 9484 11855 23710 47420 211019 422038 844076 1055095 2110190 4220380