721554152 has 32 divisors (see below), whose sum is σ = 1507317120. Its totient is φ = 320999040.

The previous prime is 721554149. The next prime is 721554161. The reversal of 721554152 is 251455127.

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 7 ways as a sum of consecutive naturals, for example, 83093 + ... + 91364.

It is an arithmetic number, because the mean of its divisors is an integer number (47103660).

Almost surely, 2^721554152 is an apocalyptic number.

It is an amenable number.

721554152 is an abundant number, since it is smaller than the sum of its proper divisors (785762968).

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

721554152 is a wasteful number, since it uses less digits than its factorization.

721554152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174521 (or 174517 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 721554152 is about 26861.7600316882. The cubic root of 721554152 is about 896.9253732823.

The spelling of 721554152 in words is "seven hundred twenty-one million, five hundred fifty-four thousand, one hundred fifty-two".