28446224649 has 8 divisors (see below), whose sum is σ = 37997640480. Its totient is φ = 18929479296.

The previous prime is 28446224629. The next prime is 28446224711. The reversal of 28446224649 is 94642264482.

It is a happy number.

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

It is not a de Polignac number, because 28446224649 - 2²¹ = 28444127497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28446224629) 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, 8665704 + ... + 8668985.

It is an arithmetic number, because the mean of its divisors is an integer number (4749705060).

Almost surely, 2^28446224649 is an apocalyptic number.

It is an amenable number.

28446224649 is a deficient number, since it is larger than the sum of its proper divisors (9551415831).

28446224649 is a wasteful number, since it uses less digits than its factorization.

28446224649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17335239.

The product of its digits is 5308416, while the sum is 51.

The spelling of 28446224649 in words is "twenty-eight billion, four hundred forty-six million, two hundred twenty-four thousand, six hundred forty-nine".