7221951040 has 112 divisors (see below), whose sum is σ = 17540752320. Its totient is φ = 2831431680.

The previous prime is 7221951029. The next prime is 7221951047. The reversal of 7221951040 is 401591227.

It is a junction number, because it is equal to n+sod(n) for n = 7221950993 and 7221951011.

It is not an unprimeable number, because it can be changed into a prime (7221951047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8178439 + ... + 8179321.

It is an arithmetic number, because the mean of its divisors is an integer number (156613860).

Almost surely, 2^7221951040 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 7221951040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8770376160).

7221951040 is an abundant number, since it is smaller than the sum of its proper divisors (10318801280).

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

7221951040 is a wasteful number, since it uses less digits than its factorization.

7221951040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 7221951040 is about 84982.0630486222. The cubic root of 7221951040 is about 1932.9391390795.

The spelling of 7221951040 in words is "seven billion, two hundred twenty-one million, nine hundred fifty-one thousand, forty".