726261972 has 12 divisors (see below), whose sum is σ = 1694611296. Its totient is φ = 242087320.

The previous prime is 726261971. The next prime is 726262037. The reversal of 726261972 is 279162627.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726261971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30260904 + ... + 30260927.

It is an arithmetic number, because the mean of its divisors is an integer number (141217608).

Almost surely, 2^726261972 is an apocalyptic number.

It is an amenable number.

726261972 is an abundant number, since it is smaller than the sum of its proper divisors (968349324).

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

726261972 is a wasteful number, since it uses less digits than its factorization.

726261972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60521838 (or 60521836 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 726261972 is about 26949.2480785643. The cubic root of 726261972 is about 898.8718259006.

The spelling of 726261972 in words is "seven hundred twenty-six million, two hundred sixty-one thousand, nine hundred seventy-two".