289628473 has 8 divisors (see below), whose sum is σ = 307040328. Its totient is φ = 272258304.

The previous prime is 289628461. The next prime is 289628477. The reversal of 289628473 is 374826982.

It can be written as a sum of positive squares in 4 ways, for example, as 12306064 + 277322409 = 3508^2 + 16653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289628473 - 2⁵ = 289628441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289628477) 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, 4515 + ... + 24487.

It is an arithmetic number, because the mean of its divisors is an integer number (38380041).

Almost surely, 2^289628473 is an apocalyptic number.

It is an amenable number.

289628473 is a deficient number, since it is larger than the sum of its proper divisors (17411855).

289628473 is a wasteful number, since it uses less digits than its factorization.

289628473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20843.

The product of its digits is 1161216, while the sum is 49.

The square root of 289628473 is about 17018.4744615961. The cubic root of 289628473 is about 661.6278100329.

The spelling of 289628473 in words is "two hundred eighty-nine million, six hundred twenty-eight thousand, four hundred seventy-three".