28741392884 has 12 divisors (see below), whose sum is σ = 50306906244. Its totient is φ = 14367991104.

The previous prime is 28741392881. The next prime is 28741392899. The reversal of 28741392884 is 48829314782.

It can be written as a sum of positive squares in 2 ways, for example, as 19382765284 + 9358627600 = 139222^2 + 96740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741392881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652337 + ... + 695000.

It is an arithmetic number, because the mean of its divisors is an integer number (4192242187).

Almost surely, 2^28741392884 is an apocalyptic number.

It is an amenable number.

28741392884 is a deficient number, since it is larger than the sum of its proper divisors (21565513360).

28741392884 is a wasteful number, since it uses less digits than its factorization.

28741392884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352674 (or 1352672 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 56.

The spelling of 28741392884 in words is "twenty-eight billion, seven hundred forty-one million, three hundred ninety-two thousand, eight hundred eighty-four".