720918792 has 96 divisors (see below), whose sum is σ = 2208941280. Its totient is φ = 218453760.

The previous prime is 720918787. The next prime is 720918799. The reversal of 720918792 is 297819027.

It is not an unprimeable number, because it can be changed into a prime (720918799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4528 + ... + 38240.

It is an arithmetic number, because the mean of its divisors is an integer number (23009805).

Almost surely, 2^720918792 is an apocalyptic number.

720918792 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720918792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104470640).

720918792 is an abundant number, since it is smaller than the sum of its proper divisors (1488022488).

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

720918792 is a wasteful number, since it uses less digits than its factorization.

720918792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33745 (or 33729 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 720918792 is about 26849.9309496319. The cubic root of 720918792 is about 896.6620352959.

The spelling of 720918792 in words is "seven hundred twenty million, nine hundred eighteen thousand, seven hundred ninety-two".