722130 has 16 divisors (see below), whose sum is σ = 1733184. Its totient is φ = 192560.

The previous prime is 722123. The next prime is 722147. The reversal of 722130 is 31227.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722130.

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, 12006 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (108324).

2⁷²²¹³⁰ is an apocalyptic number.

722130 is an abundant number, since it is smaller than the sum of its proper divisors (1011054).

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

722130 is a wasteful number, since it uses less digits than its factorization.

722130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24081.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 722130 is about 849.7823250692. The cubic root of 722130 is about 89.7163911787.

Adding to 722130 its reverse (31227), we get a palindrome (753357).

The spelling of 722130 in words is "seven hundred twenty-two thousand, one hundred thirty".