726406672 has 10 divisors (see below), whose sum is σ = 1407412958. Its totient is φ = 363203328.

The previous prime is 726406669. The next prime is 726406679. The reversal of 726406672 is 276604627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 717382656 + 9024016 = 26784^2 + 3004^2 .

It is a super-2 number, since 2×726406672² = 1055333306252231168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726406679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22700193 + ... + 22700224.

Almost surely, 2^726406672 is an apocalyptic number.

It is an amenable number.

726406672 is a deficient number, since it is larger than the sum of its proper divisors (681006286).

726406672 is a wasteful number, since it uses less digits than its factorization.

726406672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45400425 (or 45400419 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 726406672 is about 26951.9326208716. The cubic root of 726406672 is about 898.9315188310.

The spelling of 726406672 in words is "seven hundred twenty-six million, four hundred six thousand, six hundred seventy-two".