4428561 has 16 divisors (see below), whose sum is σ = 6177600. Its totient is φ = 2818368.

The previous prime is 4428559. The next prime is 4428587. The reversal of 4428561 is 1658244.

It is not a de Polignac number, because 4428561 - 2¹ = 4428559 is a prime.

It is a super-6 number, since 6×4428561⁶ (a number of 41 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (4428511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9250 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (386100).

Almost surely, 2^4428561 is an apocalyptic number.

It is an amenable number.

4428561 is a deficient number, since it is larger than the sum of its proper divisors (1749039).

4428561 is a wasteful number, since it uses less digits than its factorization.

4428561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 7680, while the sum is 30.

The square root of 4428561 is about 2104.4146454537. The cubic root of 4428561 is about 164.2180447925.

The spelling of 4428561 in words is "four million, four hundred twenty-eight thousand, five hundred sixty-one".