28888347444 has 24 divisors (see below), whose sum is σ = 73533975648. Its totient is φ = 8754044640.

The previous prime is 28888347431. The next prime is 28888347463. The reversal of 28888347444 is 44474388882.

It is a super-2 number, since 2×28888347444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109425427 + ... + 109425690.

It is an arithmetic number, because the mean of its divisors is an integer number (3063915652).

Almost surely, 2^28888347444 is an apocalyptic number.

It is an amenable number.

28888347444 is an abundant number, since it is smaller than the sum of its proper divisors (44645628204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28888347444 is a wasteful number, since it uses less digits than its factorization.

28888347444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218851135 (or 218851133 counting only the distinct ones).

The product of its digits is 44040192, while the sum is 60.

The spelling of 28888347444 in words is "twenty-eight billion, eight hundred eighty-eight million, three hundred forty-seven thousand, four hundred forty-four".