289670380 has 12 divisors (see below), whose sum is σ = 608307840. Its totient is φ = 115868144.

The previous prime is 289670369. The next prime is 289670393. The reversal of 289670380 is 83076982.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7241740 + ... + 7241779.

It is an arithmetic number, because the mean of its divisors is an integer number (50692320).

Almost surely, 2^289670380 is an apocalyptic number.

289670380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289670380 is an abundant number, since it is smaller than the sum of its proper divisors (318637460).

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

289670380 is a wasteful number, since it uses less digits than its factorization.

289670380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14483528 (or 14483526 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 289670380 is about 17019.7056378775. The cubic root of 289670380 is about 661.6597193029.

The spelling of 289670380 in words is "two hundred eighty-nine million, six hundred seventy thousand, three hundred eighty".