289469620 has 24 divisors (see below), whose sum is σ = 663149088. Its totient is φ = 105261600.

The previous prime is 289469527. The next prime is 289469657. The reversal of 289469620 is 26964982.

289469620 = 1770² + 1771² + ... + 1857².

It is a congruent number.

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, 657666 + ... + 658105.

It is an arithmetic number, because the mean of its divisors is an integer number (27631212).

Almost surely, 2^289469620 is an apocalyptic number.

289469620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289469620 is an abundant number, since it is smaller than the sum of its proper divisors (373679468).

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

289469620 is a wasteful number, since it uses less digits than its factorization.

289469620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315791 (or 1315789 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 289469620 is about 17013.8067462870. The cubic root of 289469620 is about 661.5068265509.

The spelling of 289469620 in words is "two hundred eighty-nine million, four hundred sixty-nine thousand, six hundred twenty".