720264820 has 96 divisors (see below), whose sum is σ = 1691891712. Its totient is φ = 255360000.

The previous prime is 720264817. The next prime is 720264827. The reversal of 720264820 is 28462027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720264827) 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, 2563080 + ... + 2563360.

It is an arithmetic number, because the mean of its divisors is an integer number (17623872).

Almost surely, 2^720264820 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 720264820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845945856).

720264820 is an abundant number, since it is smaller than the sum of its proper divisors (971626892).

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

720264820 is a wasteful number, since it uses less digits than its factorization.

720264820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 720264820 is about 26837.7499056832. The cubic root of 720264820 is about 896.3908215462.

The spelling of 720264820 in words is "seven hundred twenty million, two hundred sixty-four thousand, eight hundred twenty".