721411532 has 24 divisors (see below), whose sum is σ = 1335243840. Its totient is φ = 340094160.

The previous prime is 721411501. The next prime is 721411543. The reversal of 721411532 is 235114127.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6458 + ... + 38529.

It is an arithmetic number, because the mean of its divisors is an integer number (55635160).

Almost surely, 2^721411532 is an apocalyptic number.

It is an amenable number.

721411532 is a deficient number, since it is larger than the sum of its proper divisors (613832308).

721411532 is a wasteful number, since it uses less digits than its factorization.

721411532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45221 (or 45219 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 721411532 is about 26859.1051973069. The cubic root of 721411532 is about 896.8662749571.

Adding to 721411532 its reverse (235114127), we get a palindrome (956525659).

The spelling of 721411532 in words is "seven hundred twenty-one million, four hundred eleven thousand, five hundred thirty-two".