28444009011 has 8 divisors (see below), whose sum is σ = 41373104064. Its totient is φ = 17238793320.

The previous prime is 28444009003. The next prime is 28444009031. The reversal of 28444009011 is 11090044482.

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

It is not a de Polignac number, because 28444009011 - 2³ = 28444009003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 861939667 = 28444009011 / (2 + 8 + 4 + 4 + 4 + 0 + 0 + 9 + 0 + 1 + 1).

It is not an unprimeable number, because it can be changed into a prime (28444009031) 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, 430969801 + ... + 430969866.

It is an arithmetic number, because the mean of its divisors is an integer number (5171638008).

Almost surely, 2^28444009011 is an apocalyptic number.

28444009011 is a deficient number, since it is larger than the sum of its proper divisors (12929095053).

28444009011 is a wasteful number, since it uses less digits than its factorization.

28444009011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861939681.

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 28444009011 in words is "twenty-eight billion, four hundred forty-four million, nine thousand, eleven".