289648790 has 16 divisors (see below), whose sum is σ = 526744512. Its totient is φ = 114664704.

The previous prime is 289648789. The next prime is 289648813. The reversal of 289648790 is 97846982.

It is a congruent number.

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, 148334 + ... + 150273.

It is an arithmetic number, because the mean of its divisors is an integer number (32921532).

Almost surely, 2^289648790 is an apocalyptic number.

289648790 is a deficient number, since it is larger than the sum of its proper divisors (237095722).

289648790 is a wasteful number, since it uses less digits than its factorization.

289648790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298711.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 289648790 is about 17019.0713612700. The cubic root of 289648790 is about 661.6432804017.

The spelling of 289648790 in words is "two hundred eighty-nine million, six hundred forty-eight thousand, seven hundred ninety".