289662380 has 24 divisors (see below), whose sum is σ = 695190048. Its totient is φ = 99312768.

The previous prime is 289662341. The next prime is 289662383. The reversal of 289662380 is 83266982.

It is not an unprimeable number, because it can be changed into a prime (289662383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034369 + ... + 1034648.

It is an arithmetic number, because the mean of its divisors is an integer number (28966252).

Almost surely, 2^289662380 is an apocalyptic number.

289662380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289662380 is an abundant number, since it is smaller than the sum of its proper divisors (405527668).

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

289662380 is a wasteful number, since it uses less digits than its factorization.

289662380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069033 (or 2069031 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 289662380 is about 17019.4706145638. The cubic root of 289662380 is about 661.6536280962.

The spelling of 289662380 in words is "two hundred eighty-nine million, six hundred sixty-two thousand, three hundred eighty".