7213724920 has 64 divisors (see below), whose sum is σ = 17230449600. Its totient is φ = 2708674560.

The previous prime is 7213724911. The next prime is 7213724933. The reversal of 7213724920 is 294273127.

It is a self number, because there is not a number n which added to its sum of digits gives 7213724920.

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, 250885 + ... + 278155.

It is an arithmetic number, because the mean of its divisors is an integer number (269225775).

Almost surely, 2^7213724920 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 7213724920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8615224800).

7213724920 is an abundant number, since it is smaller than the sum of its proper divisors (10016724680).

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

7213724920 is a wasteful number, since it uses less digits than its factorization.

7213724920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27688 (or 27684 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 7213724920 is about 84933.6501040665. The cubic root of 7213724920 is about 1932.2049593451.

The spelling of 7213724920 in words is "seven billion, two hundred thirteen million, seven hundred twenty-four thousand, nine hundred twenty".