722490 has 16 divisors (see below), whose sum is σ = 1734048. Its totient is φ = 192656.

The previous prime is 722489. The next prime is 722509. The reversal of 722490 is 94227.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 722490.

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, 12012 + ... + 12071.

It is an arithmetic number, because the mean of its divisors is an integer number (108378).

2⁷²²⁴⁹⁰ is an apocalyptic number.

722490 is an abundant number, since it is smaller than the sum of its proper divisors (1011558).

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

722490 is a wasteful number, since it uses less digits than its factorization.

722490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24093.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 722490 is about 849.9941176267. The cubic root of 722490 is about 89.7312973291.

The spelling of 722490 in words is "seven hundred twenty-two thousand, four hundred ninety".