7404391680 has 144 divisors (see below), whose sum is σ = 27026127744. Its totient is φ = 1692426240.

The previous prime is 7404391669. The next prime is 7404391693. The reversal of 7404391680 is 861934047.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110851 + ... + 164610.

Almost surely, 2^7404391680 is an apocalyptic number.

7404391680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7404391680 is an abundant number, since it is smaller than the sum of its proper divisors (19621736064).

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

7404391680 is a wasteful number, since it uses less digits than its factorization.

7404391680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275492 (or 275478 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 7404391680 is about 86048.7750058070. The cubic root of 7404391680 is about 1949.0805816872.

The spelling of 7404391680 in words is "seven billion, four hundred four million, three hundred ninety-one thousand, six hundred eighty".