489265920 has 648 divisors, whose sum is σ = 2078036688. Its totient is φ = 109486080.

The previous prime is 489265883. The next prime is 489265943. The reversal of 489265920 is 29562984.

It is a tau number, because it is divible by the number of its divisors (648).

It is a super-2 number, since 2×489265920² = 478762280946892800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37635834 + ... + 37635846.

Almost surely, 2^489265920 is an apocalyptic number.

489265920 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 489265920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039018344).

489265920 is an abundant number, since it is smaller than the sum of its proper divisors (1588770768).

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

489265920 is a wasteful number, since it uses less digits than its factorization.

489265920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 489265920 is about 22119.3562293300. The cubic root of 489265920 is about 787.9796261921.

The spelling of 489265920 in words is "four hundred eighty-nine million, two hundred sixty-five thousand, nine hundred twenty".