720285136 has 40 divisors (see below), whose sum is σ = 1483610400. Its totient is φ = 337795200.

The previous prime is 720285119. The next prime is 720285143. The reversal of 720285136 is 631582027.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18975 + ... + 42433.

It is an arithmetic number, because the mean of its divisors is an integer number (37090260).

Almost surely, 2^720285136 is an apocalyptic number.

720285136 is a gapful number since it is divisible by the number (76) 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 720285136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741805200).

720285136 is an abundant number, since it is smaller than the sum of its proper divisors (763325264).

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

720285136 is a wasteful number, since it uses less digits than its factorization.

720285136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23587 (or 23581 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 720285136 is about 26838.1283997227. The cubic root of 720285136 is about 896.3992494207.

The spelling of 720285136 in words is "seven hundred twenty million, two hundred eighty-five thousand, one hundred thirty-six".