489521240 has 64 divisors (see below), whose sum is σ = 1189006560. Its totient is φ = 180311040.

The previous prime is 489521203. The next prime is 489521243. The reversal of 489521240 is 42125984.

It is a super-2 number, since 2×489521240² = 479262088822275200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 489521240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489521243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283580 + ... + 285300.

Almost surely, 2^489521240 is an apocalyptic number.

489521240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489521240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594503280).

489521240 is an abundant number, since it is smaller than the sum of its proper divisors (699485320).

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

489521240 is a wasteful number, since it uses less digits than its factorization.

489521240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 489521240 is about 22125.1268922915. The cubic root of 489521240 is about 788.1166695763.

The spelling of 489521240 in words is "four hundred eighty-nine million, five hundred twenty-one thousand, two hundred forty".