7940442528 has 96 divisors (see below), whose sum is σ = 23229198720. Its totient is φ = 2638863360.

The previous prime is 7940442491. The next prime is 7940442541. The reversal of 7940442528 is 8252440497.

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

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, 277533 + ... + 304803.

It is an arithmetic number, because the mean of its divisors is an integer number (241970820).

Almost surely, 2^7940442528 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 7940442528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11614599360).

7940442528 is an abundant number, since it is smaller than the sum of its proper divisors (15288756192).

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

7940442528 is a wasteful number, since it uses less digits than its factorization.

7940442528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27627 (or 27613 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 7940442528 is about 89109.1607411943. The cubic root of 7940442528 is about 1995.0245098464.

The spelling of 7940442528 in words is "seven billion, nine hundred forty million, four hundred forty-two thousand, five hundred twenty-eight".