28448284631 has 8 divisors (see below), whose sum is σ = 31624892544. Its totient is φ = 25412859360.

The previous prime is 28448284591. The next prime is 28448284637. The reversal of 28448284631 is 13648284482.

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 28448284631 - 2⁶ = 28448284567 is a prime.

It is a super-2 number, since 2×28448284631² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28448284631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448284637) 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, 35295236 + ... + 35296041.

It is an arithmetic number, because the mean of its divisors is an integer number (3953111568).

Almost surely, 2^28448284631 is an apocalyptic number.

28448284631 is a deficient number, since it is larger than the sum of its proper divisors (3176607913).

28448284631 is a wasteful number, since it uses less digits than its factorization.

28448284631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70591321.

The product of its digits is 2359296, while the sum is 50.

The spelling of 28448284631 in words is "twenty-eight billion, four hundred forty-eight million, two hundred eighty-four thousand, six hundred thirty-one".