289520404 has 48 divisors (see below), whose sum is σ = 567241920. Its totient is φ = 128494080.

The previous prime is 289520383. The next prime is 289520417. The reversal of 289520404 is 404025982.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 289520404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427314 + ... + 427990.

It is an arithmetic number, because the mean of its divisors is an integer number (11817540).

Almost surely, 2^289520404 is an apocalyptic number.

It is an amenable number.

289520404 is a deficient number, since it is larger than the sum of its proper divisors (277721516).

289520404 is a wasteful number, since it uses less digits than its factorization.

289520404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 289520404 is about 17015.2991157958. The cubic root of 289520404 is about 661.5455087890.

The spelling of 289520404 in words is "two hundred eighty-nine million, five hundred twenty thousand, four hundred four".