720136450 has 24 divisors (see below), whose sum is σ = 1461223440. Its totient is φ = 261867600.

The previous prime is 720136447. The next prime is 720136451. The reversal of 720136450 is 54631027.

It is a super-3 number, since 3×720136450³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (720136451) 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 11 ways as a sum of consecutive naturals, for example, 654120 + ... + 655219.

It is an arithmetic number, because the mean of its divisors is an integer number (60884310).

Almost surely, 2^720136450 is an apocalyptic number.

720136450 is an abundant number, since it is smaller than the sum of its proper divisors (741086990).

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

720136450 is a wasteful number, since it uses less digits than its factorization.

720136450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309362 (or 1309357 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 720136450 is about 26835.3582051740. The cubic root of 720136450 is about 896.3375649645.

Adding to 720136450 its reverse (54631027), we get a palindrome (774767477).

The spelling of 720136450 in words is "seven hundred twenty million, one hundred thirty-six thousand, four hundred fifty".