7445947872 has 192 divisors, whose sum is σ = 22454724096. Its totient is φ = 2138357760.

The previous prime is 7445947871. The next prime is 7445947889. The reversal of 7445947872 is 2787495447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7445947871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2743188 + ... + 2745900.

It is an arithmetic number, because the mean of its divisors is an integer number (116951688).

Almost surely, 2^7445947872 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 7445947872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11227362048).

7445947872 is an abundant number, since it is smaller than the sum of its proper divisors (15008776224).

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

7445947872 is a wasteful number, since it uses less digits than its factorization.

7445947872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2865 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 57.

The square root of 7445947872 is about 86289.9059681954. The cubic root of 7445947872 is about 1952.7201023866.

The spelling of 7445947872 in words is "seven billion, four hundred forty-five million, nine hundred forty-seven thousand, eight hundred seventy-two".