487390640 has 80 divisors (see below), whose sum is σ = 1269695520. Its totient is φ = 172431360.

The previous prime is 487390639. The next prime is 487390661. The reversal of 487390640 is 46093784.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25076 + ... + 40044.

It is an arithmetic number, because the mean of its divisors is an integer number (15871194).

Almost surely, 2^487390640 is an apocalyptic number.

487390640 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 487390640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634847760).

487390640 is an abundant number, since it is smaller than the sum of its proper divisors (782304880).

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

487390640 is a wasteful number, since it uses less digits than its factorization.

487390640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15030 (or 15024 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 487390640 is about 22076.9255105868. The cubic root of 487390640 is about 786.9716028712.

The spelling of 487390640 in words is "four hundred eighty-seven million, three hundred ninety thousand, six hundred forty".