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4441213 = 72233389
BaseRepresentation
bin10000111100010001111101
322100122012101
4100330101331
52114104323
6235105101
752515100
oct20742175
98318171
104441213
112563827
1215a2191
13bc664a
14838737
155cadad
hex43c47d

4441213 has 12 divisors (see below), whose sum is σ = 5201820. Its totient is φ = 3780672.

The previous prime is 4441211. The next prime is 4441219. The reversal of 4441213 is 3121444.

It can be written as a sum of positive squares in 2 ways, for example, as 974169 + 3467044 = 987^2 + 1862^2 .

It is not a de Polignac number, because 4441213 - 21 = 4441211 is a prime.

It is a super-2 number, since 2×44412132 = 39448745822738, which contains 22 as substring.

It is a d-powerful number, because it can be written as 46 + 48 + 411 + 1 + 27 + 1 + 311 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11223 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (433485).

Almost surely, 24441213 is an apocalyptic number.

It is an amenable number.

4441213 is a deficient number, since it is larger than the sum of its proper divisors (760607).

4441213 is a wasteful number, since it uses less digits than its factorization.

4441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 629 counting only the distinct ones).

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

The square root of 4441213 is about 2107.4185630766. The cubic root of 4441213 is about 164.3742814910.

Adding to 4441213 its reverse (3121444), we get a palindrome (7562657).

The spelling of 4441213 in words is "four million, four hundred forty-one thousand, two hundred thirteen".

Divisors: 1 7 49 233 389 1631 2723 11417 19061 90637 634459 4441213