7478028840 has 96 divisors (see below), whose sum is σ = 22649870880. Its totient is φ = 1975141248.

The previous prime is 7478028791. The next prime is 7478028853. The reversal of 7478028840 is 488208747.

It is a happy number.

It is a super-3 number, since 3×7478028840³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7478028840.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1371159 + ... + 1376601.

It is an arithmetic number, because the mean of its divisors is an integer number (235936155).

Almost surely, 2^7478028840 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 7478028840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11324935440).

7478028840 is an abundant number, since it is smaller than the sum of its proper divisors (15171842040).

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

7478028840 is a wasteful number, since it uses less digits than its factorization.

7478028840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 48.

The square root of 7478028840 is about 86475.5967889207. The cubic root of 7478028840 is about 1955.5205247446.

The spelling of 7478028840 in words is "seven billion, four hundred seventy-eight million, twenty-eight thousand, eight hundred forty".