7214447440 has 80 divisors (see below), whose sum is σ = 17920192320. Its totient is φ = 2693053440.

The previous prime is 7214447413. The next prime is 7214447477. The reversal of 7214447440 is 447444127.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 7214447440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66420 + ... + 137260.

It is an arithmetic number, because the mean of its divisors is an integer number (224002404).

Almost surely, 2^7214447440 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 7214447440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8960096160).

7214447440 is an abundant number, since it is smaller than the sum of its proper divisors (10705744880).

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

7214447440 is a wasteful number, since it uses less digits than its factorization.

7214447440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70940 (or 70934 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 37.

The square root of 7214447440 is about 84937.9034353921. The cubic root of 7214447440 is about 1932.2694664772.

The spelling of 7214447440 in words is "seven billion, two hundred fourteen million, four hundred forty-seven thousand, four hundred forty".