6720744030 has 256 divisors, whose sum is σ = 22798540800. Its totient is φ = 1221143040.

The previous prime is 6720744029. The next prime is 6720744091. The reversal of 6720744030 is 304470276.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 6720743982 and 6720744000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 564681 + ... + 576459.

It is an arithmetic number, because the mean of its divisors is an integer number (89056800).

Almost surely, 2^6720744030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6720744030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11399270400).

6720744030 is an abundant number, since it is smaller than the sum of its proper divisors (16077796770).

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

6720744030 is a wasteful number, since it uses less digits than its factorization.

6720744030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 6720744030 is about 81980.1441203905. The cubic root of 6720744030 is about 1887.1472345138.

The spelling of 6720744030 in words is "six billion, seven hundred twenty million, seven hundred forty-four thousand, thirty".