28744074484 has 12 divisors (see below), whose sum is σ = 51251227524. Its totient is φ = 14100866624.

The previous prime is 28744074473. The next prime is 28744074503. The reversal of 28744074484 is 48447044782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18262819600 + 10481254884 = 135140^2 + 102378^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67792417 + ... + 67792840.

It is an arithmetic number, because the mean of its divisors is an integer number (4270935627).

Almost surely, 2^28744074484 is an apocalyptic number.

It is an amenable number.

28744074484 is a deficient number, since it is larger than the sum of its proper divisors (22507153040).

28744074484 is a wasteful number, since it uses less digits than its factorization.

28744074484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135585314 (or 135585312 counting only the distinct ones).

The product of its (nonzero) digits is 6422528, while the sum is 52.

The spelling of 28744074484 in words is "twenty-eight billion, seven hundred forty-four million, seventy-four thousand, four hundred eighty-four".