44028729 has 12 divisors (see below), whose sum is σ = 63655956. Its totient is φ = 29325312.

The previous prime is 44028703. The next prime is 44028769. The reversal of 44028729 is 92782044.

It can be written as a sum of positive squares in 2 ways, for example, as 33039504 + 10989225 = 5748^2 + 3315^2 .

It is not a de Polignac number, because 44028729 - 2⁸ = 44028473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44028693 and 44028702.

It is not an unprimeable number, because it can be changed into a prime (44028769) 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, 14617 + ... + 17369.

It is an arithmetic number, because the mean of its divisors is an integer number (5304663).

Almost surely, 2^44028729 is an apocalyptic number.

It is an amenable number.

44028729 is a deficient number, since it is larger than the sum of its proper divisors (19627227).

44028729 is a wasteful number, since it uses less digits than its factorization.

44028729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 44028729 is about 6635.4147571949. The cubic root of 44028729 is about 353.1116527077. Note that the first 3 decimals are identical.

It can be divided in two parts, 4402 and 8729, that added together give a palindrome (13131).

The spelling of 44028729 in words is "forty-four million, twenty-eight thousand, seven hundred twenty-nine".