721115034 has 16 divisors (see below), whose sum is σ = 1443866688. Its totient is φ = 240098912.

The previous prime is 721114991. The next prime is 721115141. The reversal of 721115034 is 430511127.

It is a junction number, because it is equal to n+sod(n) for n = 721114995 and 721115013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62427 + ... + 73070.

It is an arithmetic number, because the mean of its divisors is an integer number (90241668).

Almost surely, 2^721115034 is an apocalyptic number.

721115034 is an abundant number, since it is smaller than the sum of its proper divisors (722751654).

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

721115034 is a wasteful number, since it uses less digits than its factorization.

721115034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136389.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 721115034 is about 26853.5851237782. The cubic root of 721115034 is about 896.7433883272.

The spelling of 721115034 in words is "seven hundred twenty-one million, one hundred fifteen thousand, thirty-four".