720520834 has 16 divisors (see below), whose sum is σ = 1219691520. Its totient is φ = 316215760.

The previous prime is 720520789. The next prime is 720520859. The reversal of 720520834 is 438025027.

It is a junction number, because it is equal to n+sod(n) for n = 720520796 and 720520805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564034 + ... + 565309.

It is an arithmetic number, because the mean of its divisors is an integer number (76230720).

Almost surely, 2^720520834 is an apocalyptic number.

720520834 is a deficient number, since it is larger than the sum of its proper divisors (499170686).

720520834 is a wasteful number, since it uses less digits than its factorization.

720520834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129385.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 720520834 is about 26842.5191440744. The cubic root of 720520834 is about 896.4970146243.

The spelling of 720520834 in words is "seven hundred twenty million, five hundred twenty thousand, eight hundred thirty-four".