7894741728 has 96 divisors (see below), whose sum is σ = 21419983872. Its totient is φ = 2543385600.

The previous prime is 7894741693. The next prime is 7894741733. The reversal of 7894741728 is 8271474987.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3459948 + ... + 3462228.

It is an arithmetic number, because the mean of its divisors is an integer number (223124832).

Almost surely, 2^7894741728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7894741728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10709991936).

7894741728 is an abundant number, since it is smaller than the sum of its proper divisors (13525242144).

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

7894741728 is a wasteful number, since it uses less digits than its factorization.

7894741728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 3480 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The square root of 7894741728 is about 88852.3591583251. The cubic root of 7894741728 is about 1991.1897238388.

The spelling of 7894741728 in words is "seven billion, eight hundred ninety-four million, seven hundred forty-one thousand, seven hundred twenty-eight".