389680726 has 16 divisors (see below), whose sum is σ = 608727168. Its totient is φ = 186883200.

The previous prime is 389680723. The next prime is 389680727. The reversal of 389680726 is 627086983.

It is a self number, because there is not a number n which added to its sum of digits gives 389680726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389680723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20805 + ... + 34816.

It is an arithmetic number, because the mean of its divisors is an integer number (38045448).

Almost surely, 2^389680726 is an apocalyptic number.

389680726 is a deficient number, since it is larger than the sum of its proper divisors (219046442).

389680726 is a wasteful number, since it uses less digits than its factorization.

389680726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55767.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 389680726 is about 19740.3324693380. The cubic root of 389680726 is about 730.4149301825.

The spelling of 389680726 in words is "three hundred eighty-nine million, six hundred eighty thousand, seven hundred twenty-six".