726121164 has 12 divisors (see below), whose sum is σ = 1694282744. Its totient is φ = 242040384.

The previous prime is 726121159. The next prime is 726121211. The reversal of 726121164 is 461121627.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30255037 + ... + 30255060.

Almost surely, 2^726121164 is an apocalyptic number.

It is an amenable number.

726121164 is an abundant number, since it is smaller than the sum of its proper divisors (968161580).

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

726121164 is a wasteful number, since it uses less digits than its factorization.

726121164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510104 (or 60510102 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 726121164 is about 26946.6354857151. The cubic root of 726121164 is about 898.8137309204.

The spelling of 726121164 in words is "seven hundred twenty-six million, one hundred twenty-one thousand, one hundred sixty-four".