720171400 has 96 divisors (see below), whose sum is σ = 1881754560. Its totient is φ = 254327040.

The previous prime is 720171349. The next prime is 720171401. The reversal of 720171400 is 4171027.

720171400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (720171401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53779 + ... + 65821.

It is an arithmetic number, because the mean of its divisors is an integer number (19601610).

Almost surely, 2^720171400 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 720171400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940877280).

720171400 is an abundant number, since it is smaller than the sum of its proper divisors (1161583160).

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

720171400 is a wasteful number, since it uses less digits than its factorization.

720171400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12095 (or 12086 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 720171400 is about 26836.0093903695. The cubic root of 720171400 is about 896.3520652217.

The spelling of 720171400 in words is "seven hundred twenty million, one hundred seventy-one thousand, four hundred".