7326521620 has 192 divisors, whose sum is σ = 18228188160. Its totient is φ = 2444083200.

The previous prime is 7326521597. The next prime is 7326521641. The reversal of 7326521620 is 261256237.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40477930 + ... + 40478110.

It is an arithmetic number, because the mean of its divisors is an integer number (94938480).

Almost surely, 2^7326521620 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 7326521620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9114094080).

7326521620 is an abundant number, since it is smaller than the sum of its proper divisors (10901666540).

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

7326521620 is a wasteful number, since it uses less digits than its factorization.

7326521620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 7326521620 is about 85595.1027804745. The cubic root of 7326521620 is about 1942.2238306092.

Adding to 7326521620 its reverse (261256237), we get a palindrome (7587777857).

The spelling of 7326521620 in words is "seven billion, three hundred twenty-six million, five hundred twenty-one thousand, six hundred twenty".