720031032 has 160 divisors (see below), whose sum is σ = 2320237920. Its totient is φ = 204353280.

The previous prime is 720031019. The next prime is 720031033. The reversal of 720031032 is 230130027.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 720030996 and 720031014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720031033) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 820578 + ... + 821454.

It is an arithmetic number, because the mean of its divisors is an integer number (14501487).

Almost surely, 2^720031032 is an apocalyptic number.

720031032 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 720031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160118960).

720031032 is an abundant number, since it is smaller than the sum of its proper divisors (1600206888).

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

720031032 is a wasteful number, since it uses less digits than its factorization.

720031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 720031032 is about 26833.3939709460. The cubic root of 720031032 is about 896.2938256961.

Adding to 720031032 its reverse (230130027), we get a palindrome (950161059).

The spelling of 720031032 in words is "seven hundred twenty million, thirty-one thousand, thirty-two".