726381438 has 32 divisors (see below), whose sum is σ = 1552064640. Its totient is φ = 225957600.

The previous prime is 726381427. The next prime is 726381443. The reversal of 726381438 is 834183627.

It is a self number, because there is not a number n which added to its sum of digits gives 726381438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39913 + ... + 55188.

It is an arithmetic number, because the mean of its divisors is an integer number (48502020).

Almost surely, 2^726381438 is an apocalyptic number.

726381438 is an abundant number, since it is smaller than the sum of its proper divisors (825683202).

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

726381438 is a wasteful number, since it uses less digits than its factorization.

726381438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95192.

The product of its digits is 193536, while the sum is 42.

The square root of 726381438 is about 26951.4644871109. The cubic root of 726381438 is about 898.9211096477.

The spelling of 726381438 in words is "seven hundred twenty-six million, three hundred eighty-one thousand, four hundred thirty-eight".