289129000 has 32 divisors (see below), whose sum is σ = 676564200. Its totient is φ = 115651200.

The previous prime is 289128949. The next prime is 289129051. The reversal of 289129000 is 921982.

It is an interprime number because it is at equal distance from previous prime (289128949) and next prime (289129051).

It can be written as a sum of positive squares in 4 ways, for example, as 61058596 + 228070404 = 7814^2 + 15102^2 .

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, 143565 + ... + 145564.

Almost surely, 2^289129000 is an apocalyptic number.

289129000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289129000 is an abundant number, since it is smaller than the sum of its proper divisors (387435200).

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

289129000 is a wasteful number, since it uses less digits than its factorization.

289129000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289150 (or 289136 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 289129000 is about 17003.7936943495. The cubic root of 289129000 is about 661.2472588487.

The spelling of 289129000 in words is "two hundred eighty-nine million, one hundred twenty-nine thousand".