289650520 has 16 divisors (see below), whose sum is σ = 651713760. Its totient is φ = 115860192.

The previous prime is 289650503. The next prime is 289650601. The reversal of 289650520 is 25056982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 289650520.

It is a congruent number.

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, 3620592 + ... + 3620671.

It is an arithmetic number, because the mean of its divisors is an integer number (40732110).

Almost surely, 2^289650520 is an apocalyptic number.

289650520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289650520 is an abundant number, since it is smaller than the sum of its proper divisors (362063240).

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

289650520 is a wasteful number, since it uses less digits than its factorization.

289650520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241274 (or 7241270 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 289650520 is about 17019.1221865289. The cubic root of 289650520 is about 661.6445976759.

The spelling of 289650520 in words is "two hundred eighty-nine million, six hundred fifty thousand, five hundred twenty".