289734480 has 120 divisors (see below), whose sum is σ = 1112047872. Its totient is φ = 66223872.

The previous prime is 289734449. The next prime is 289734481. The reversal of 289734480 is 84437982.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289734481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23704 + ... + 33783.

Almost surely, 2^289734480 is an apocalyptic number.

289734480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289734480 is an abundant number, since it is smaller than the sum of its proper divisors (822313392).

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

289734480 is a wasteful number, since it uses less digits than its factorization.

289734480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57513 (or 57504 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 289734480 is about 17021.5886450120. The cubic root of 289734480 is about 661.7085210478.

The spelling of 289734480 in words is "two hundred eighty-nine million, seven hundred thirty-four thousand, four hundred eighty".