289765020 has 48 divisors (see below), whose sum is σ = 814036608. Its totient is φ = 77014080.

The previous prime is 289764997. The next prime is 289765031. The reversal of 289765020 is 20567982.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 289765020.

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, 10555 + ... + 26285.

It is an arithmetic number, because the mean of its divisors is an integer number (16959096).

Almost surely, 2^289765020 is an apocalyptic number.

289765020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289765020 is an abundant number, since it is smaller than the sum of its proper divisors (524271588).

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

289765020 is a wasteful number, since it uses less digits than its factorization.

289765020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16050 (or 16048 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 289765020 is about 17022.4857174268. The cubic root of 289765020 is about 661.7317697688.

The spelling of 289765020 in words is "two hundred eighty-nine million, seven hundred sixty-five thousand, twenty".