487309909728 has 24 divisors (see below), whose sum is σ = 1279188513288. Its totient is φ = 162436636544.

The previous prime is 487309909703. The next prime is 487309909741. The reversal of 487309909728 is 827909903784.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×487309909728² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538072351 + ... + 2538072542.

It is an arithmetic number, because the mean of its divisors is an integer number (53299521387).

Almost surely, 2^487309909728 is an apocalyptic number.

487309909728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

487309909728 is an abundant number, since it is smaller than the sum of its proper divisors (791878603560).

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

487309909728 is a wasteful number, since it uses less digits than its factorization.

487309909728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076144906 (or 5076144898 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 66.

The spelling of 487309909728 in words is "four hundred eighty-seven billion, three hundred nine million, nine hundred nine thousand, seven hundred twenty-eight".