726623420 has 24 divisors (see below), whose sum is σ = 1578528000. Its totient is φ = 280626752.

The previous prime is 726623407. The next prime is 726623437. The reversal of 726623420 is 24326627.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 625820 + ... + 626979.

It is an arithmetic number, because the mean of its divisors is an integer number (65772000).

Almost surely, 2^726623420 is an apocalyptic number.

It is an amenable number.

726623420 is an abundant number, since it is smaller than the sum of its proper divisors (851904580).

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

726623420 is a wasteful number, since it uses less digits than its factorization.

726623420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252837 (or 1252835 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 726623420 is about 26955.9533313144. The cubic root of 726623420 is about 899.0209188143.

The spelling of 726623420 in words is "seven hundred twenty-six million, six hundred twenty-three thousand, four hundred twenty".