726605420 has 48 divisors (see below), whose sum is σ = 1602514368. Its totient is φ = 276207360.

The previous prime is 726605417. The next prime is 726605431. The reversal of 726605420 is 24506627.

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 15 ways as a sum of consecutive naturals, for example, 67190 + ... + 77250.

It is an arithmetic number, because the mean of its divisors is an integer number (33385716).

Almost surely, 2^726605420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726605420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801257184).

726605420 is an abundant number, since it is smaller than the sum of its proper divisors (875908948).

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

726605420 is a wasteful number, since it uses less digits than its factorization.

726605420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250 (or 10248 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 726605420 is about 26955.6194512387. The cubic root of 726605420 is about 899.0134952026.

The spelling of 726605420 in words is "seven hundred twenty-six million, six hundred five thousand, four hundred twenty".