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4428581 = 23192547
BaseRepresentation
bin10000111001001100100101
322022222212112
4100321030211
52113203311
6234530405
752433213
oct20711445
98288775
104428581
112555293
121596a05
13bc0981
14833cb3
155c728b
hex439325

4428581 has 4 divisors (see below), whose sum is σ = 4621152. Its totient is φ = 4236012.

The previous prime is 4428559. The next prime is 4428587. The reversal of 4428581 is 1858244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4428581 is a prime.

It is a super-2 number, since 2×44285812 = 39224659347122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96251 + ... + 96296.

It is an arithmetic number, because the mean of its divisors is an integer number (1155288).

Almost surely, 24428581 is an apocalyptic number.

It is an amenable number.

4428581 is a deficient number, since it is larger than the sum of its proper divisors (192571).

4428581 is a wasteful number, since it uses less digits than its factorization.

4428581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192570.

The product of its digits is 10240, while the sum is 32.

The square root of 4428581 is about 2104.4193973636. The cubic root of 4428581 is about 164.2182920027.

The spelling of 4428581 in words is "four million, four hundred twenty-eight thousand, five hundred eighty-one".

Divisors: 1 23 192547 4428581