7020478440 has 256 divisors, whose sum is σ = 25202016000. Its totient is φ = 1731870720.

The previous prime is 7020478433. The next prime is 7020478447. The reversal of 7020478440 is 448740207.

7020478440 is a `hidden beast` number, since 7 + 0 + 204 + 7 + 8 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (7020478433) and next prime (7020478447).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7020478395 and 7020478404.

It is not an unprimeable number, because it can be changed into a prime (7020478447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1080000 + ... + 1086480.

It is an arithmetic number, because the mean of its divisors is an integer number (98445375).

Almost surely, 2^7020478440 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 7020478440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12601008000).

7020478440 is an abundant number, since it is smaller than the sum of its proper divisors (18181537560).

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

7020478440 is a wasteful number, since it uses less digits than its factorization.

7020478440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577 (or 6567 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 7020478440 is about 83788.2953639707. The cubic root of 7020478440 is about 1914.7947878914.

The spelling of 7020478440 in words is "seven billion, twenty million, four hundred seventy-eight thousand, four hundred forty".