289426690 has 16 divisors (see below), whose sum is σ = 595392192. Its totient is φ = 99231984.

The previous prime is 289426681. The next prime is 289426741. The reversal of 289426690 is 96624982.

It is a super-2 number, since 2×289426690² = 167535617768712200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 289426690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2067264 + ... + 2067403.

It is an arithmetic number, because the mean of its divisors is an integer number (37212012).

Almost surely, 2^289426690 is an apocalyptic number.

289426690 is an abundant number, since it is smaller than the sum of its proper divisors (305965502).

289426690 is a wasteful number, since it uses less digits than its factorization.

289426690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134681.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 289426690 is about 17012.5450770894. The cubic root of 289426690 is about 661.4741231857.

It can be divided in two parts, 2894 and 26690, that added together give a square (29584 = 172²).

The spelling of 289426690 in words is "two hundred eighty-nine million, four hundred twenty-six thousand, six hundred ninety".