721130952 has 16 divisors (see below), whose sum is σ = 1802827440. Its totient is φ = 240376976.

The previous prime is 721130947. The next prime is 721130953. The reversal of 721130952 is 259031127.

It is not an unprimeable number, because it can be changed into a prime (721130953) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15023538 + ... + 15023585.

It is an arithmetic number, because the mean of its divisors is an integer number (112676715).

Almost surely, 2^721130952 is an apocalyptic number.

It is an amenable number.

721130952 is an abundant number, since it is smaller than the sum of its proper divisors (1081696488).

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

721130952 is a wasteful number, since it uses less digits than its factorization.

721130952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30047132 (or 30047128 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 721130952 is about 26853.8815071490. The cubic root of 721130952 is about 896.7499865608.

The spelling of 721130952 in words is "seven hundred twenty-one million, one hundred thirty thousand, nine hundred fifty-two".