7940235040 has 48 divisors (see below), whose sum is σ = 18895783032. Its totient is φ = 3152902144.

The previous prime is 7940234977. The next prime is 7940235041. The reversal of 7940235040 is 405320497.

It can be written as a sum of positive squares in 4 ways, for example, as 7094355984 + 845879056 = 84228^2 + 29084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7940234987 and 7940235005.

It is not an unprimeable number, because it can be changed into a prime (7940235041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159199 + ... + 203038.

Almost surely, 2^7940235040 is an apocalyptic number.

It is an amenable number.

7940235040 is an abundant number, since it is smaller than the sum of its proper divisors (10955547992).

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

7940235040 is a wasteful number, since it uses less digits than its factorization.

7940235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362389 (or 362381 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 7940235040 is about 89107.9964986308. The cubic root of 7940235040 is about 1995.0071326768.

The spelling of 7940235040 in words is "seven billion, nine hundred forty million, two hundred thirty-five thousand, forty".