28444629 has 16 divisors (see below), whose sum is σ = 40499712. Its totient is φ = 17714928.

The previous prime is 28444597. The next prime is 28444657. The reversal of 28444629 is 92644482.

It is not a de Polignac number, because 28444629 - 2⁵ = 28444597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28464629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827 + ... + 7760.

It is an arithmetic number, because the mean of its divisors is an integer number (2531232).

Almost surely, 2^28444629 is an apocalyptic number.

It is an amenable number.

28444629 is a deficient number, since it is larger than the sum of its proper divisors (12055083).

28444629 is a wasteful number, since it uses less digits than its factorization.

28444629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656.

The product of its digits is 110592, while the sum is 39.

The square root of 28444629 is about 5333.3506353886. The cubic root of 28444629 is about 305.2577915442.

The spelling of 28444629 in words is "twenty-eight million, four hundred forty-four thousand, six hundred twenty-nine".