289487420 has 24 divisors (see below), whose sum is σ = 639920400. Its totient is φ = 109700352.

The previous prime is 289487417. The next prime is 289487423. The reversal of 289487420 is 24784982.

289487420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (289487417) and next prime (289487423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289487423) 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, 380525 + ... + 381284.

It is an arithmetic number, because the mean of its divisors is an integer number (26663350).

Almost surely, 2^289487420 is an apocalyptic number.

289487420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289487420 is an abundant number, since it is smaller than the sum of its proper divisors (350432980).

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

289487420 is a wasteful number, since it uses less digits than its factorization.

289487420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761837 (or 761835 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 289487420 is about 17014.3298428119. The cubic root of 289487420 is about 661.5203853487.

The spelling of 289487420 in words is "two hundred eighty-nine million, four hundred eighty-seven thousand, four hundred twenty".