7401680240 has 40 divisors (see below), whose sum is σ = 17444658768. Its totient is φ = 2920112640.

The previous prime is 7401680239. The next prime is 7401680287. The reversal of 7401680240 is 420861047.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 7401680197 and 7401680206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627866 + ... + 639545.

Almost surely, 2^7401680240 is an apocalyptic number.

It is an amenable number.

7401680240 is an abundant number, since it is smaller than the sum of its proper divisors (10042978528).

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

7401680240 is a wasteful number, since it uses less digits than its factorization.

7401680240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267497 (or 1267491 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 7401680240 is about 86033.0183127385. The cubic root of 7401680240 is about 1948.8426391030.

The spelling of 7401680240 in words is "seven billion, four hundred one million, six hundred eighty thousand, two hundred forty".