289038978 has 24 divisors (see below), whose sum is σ = 646454016. Its totient is φ = 93238200.

The previous prime is 289038973. The next prime is 289039007. The reversal of 289038978 is 879830982.

It is not an unprimeable number, because it can be changed into a prime (289038973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258438 + ... + 259553.

It is an arithmetic number, because the mean of its divisors is an integer number (26935584).

Almost surely, 2^289038978 is an apocalyptic number.

289038978 is an abundant number, since it is smaller than the sum of its proper divisors (357415038).

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

289038978 is a wasteful number, since it uses less digits than its factorization.

289038978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518030 (or 518027 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 289038978 is about 17001.1463731126. The cubic root of 289038978 is about 661.1786239951.

The spelling of 289038978 in words is "two hundred eighty-nine million, thirty-eight thousand, nine hundred seventy-eight".