7427985940 has 24 divisors (see below), whose sum is σ = 15741883080. Its totient is φ = 2943934848.

The previous prime is 7427985923. The next prime is 7427985941. The reversal of 7427985940 is 495897247.

It can be written as a sum of positive squares in 4 ways, for example, as 279959824 + 7148026116 = 16732^2 + 84546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7427985941) 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, 1701487 + ... + 1705846.

It is an arithmetic number, because the mean of its divisors is an integer number (655911795).

Almost surely, 2^7427985940 is an apocalyptic number.

It is an amenable number.

7427985940 is an abundant number, since it is smaller than the sum of its proper divisors (8313897140).

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

7427985940 is a wasteful number, since it uses less digits than its factorization.

7427985940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407451 (or 3407449 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The square root of 7427985940 is about 86185.7641377043. The cubic root of 7427985940 is about 1951.1486495743.

The spelling of 7427985940 in words is "seven billion, four hundred twenty-seven million, nine hundred eighty-five thousand, nine hundred forty".