7228163440 has 40 divisors (see below), whose sum is σ = 16852358880. Its totient is φ = 2883200256.

The previous prime is 7228163419. The next prime is 7228163461. The reversal of 7228163440 is 443618227.

It is an interprime number because it is at equal distance from previous prime (7228163419) and next prime (7228163461).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 7228163440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97119 + ... + 154558.

It is an arithmetic number, because the mean of its divisors is an integer number (421308972).

Almost surely, 2^7228163440 is an apocalyptic number.

It is an amenable number.

7228163440 is an abundant number, since it is smaller than the sum of its proper divisors (9624195440).

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

7228163440 is a wasteful number, since it uses less digits than its factorization.

7228163440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252049 (or 252043 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 7228163440 is about 85018.6064341212. The cubic root of 7228163440 is about 1933.4932252489.

The spelling of 7228163440 in words is "seven billion, two hundred twenty-eight million, one hundred sixty-three thousand, four hundred forty".