7220454240 has 192 divisors, whose sum is σ = 23432213952. Its totient is φ = 1867776000.

The previous prime is 7220454221. The next prime is 7220454253. The reversal of 7220454240 is 424540227.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7220454198 and 7220454207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3797290 + ... + 3799190.

It is an arithmetic number, because the mean of its divisors is an integer number (122042781).

Almost surely, 2^7220454240 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 7220454240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11716106976).

7220454240 is an abundant number, since it is smaller than the sum of its proper divisors (16211759712).

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

7220454240 is a wasteful number, since it uses less digits than its factorization.

7220454240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 7220454240 is about 84973.2560279998. The cubic root of 7220454240 is about 1932.8055914555.

Adding to 7220454240 its reverse (424540227), we get a palindrome (7644994467).

The spelling of 7220454240 in words is "seven billion, two hundred twenty million, four hundred fifty-four thousand, two hundred forty".