28444071 has 8 divisors (see below), whose sum is σ = 38732544. Its totient is φ = 18559160.

The previous prime is 28444057. The next prime is 28444103. The reversal of 28444071 is 17044482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28444071 - 2⁹ = 28443559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100725 + ... + 101006.

It is an arithmetic number, because the mean of its divisors is an integer number (4841568).

Almost surely, 2^28444071 is an apocalyptic number.

28444071 is a deficient number, since it is larger than the sum of its proper divisors (10288473).

28444071 is a wasteful number, since it uses less digits than its factorization.

28444071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201781.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 28444071 is about 5333.2983228018. The cubic root of 28444071 is about 305.2557954443.

The spelling of 28444071 in words is "twenty-eight million, four hundred forty-four thousand, seventy-one".