721952352 has 120 divisors (see below), whose sum is σ = 2316355272. Its totient is φ = 218764800.

The previous prime is 721952339. The next prime is 721952369. The reversal of 721952352 is 253259127.

721952352 is a `hidden beast` number, since 72 + 19 + 523 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15852 + ... + 41172.

Almost surely, 2^721952352 is an apocalyptic number.

721952352 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 721952352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158177636).

721952352 is an abundant number, since it is smaller than the sum of its proper divisors (1594402920).

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

721952352 is a wasteful number, since it uses less digits than its factorization.

721952352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25354 (or 25337 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 721952352 is about 26869.1710329887. The cubic root of 721952352 is about 897.0903366475.

It can be divided in two parts, 72195 and 2352, that added together give a palindrome (74547).

The spelling of 721952352 in words is "seven hundred twenty-one million, nine hundred fifty-two thousand, three hundred fifty-two".