7421247344 has 80 divisors (see below), whose sum is σ = 17170900992. Its totient is φ = 3038052864.

The previous prime is 7421247341. The next prime is 7421247347. The reversal of 7421247344 is 4437421247.

It is an interprime number because it is at equal distance from previous prime (7421247341) and next prime (7421247347).

It is a junction number, because it is equal to n+sod(n) for n = 7421247298 and 7421247307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421247341) 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, 2453417 + ... + 2456439.

Almost surely, 2^7421247344 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 7421247344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8585450496).

7421247344 is an abundant number, since it is smaller than the sum of its proper divisors (9749653648).

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

7421247344 is a wasteful number, since it uses less digits than its factorization.

7421247344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014 (or 4008 counting only the distinct ones).

The product of its digits is 150528, while the sum is 38.

The square root of 7421247344 is about 86146.6618273744. The cubic root of 7421247344 is about 1950.5584500904.

The spelling of 7421247344 in words is "seven billion, four hundred twenty-one million, two hundred forty-seven thousand, three hundred forty-four".