387890287500 has 72 divisors (see below), whose sum is σ = 1131274375056. Its totient is φ = 103437400000.

The previous prime is 387890287429. The next prime is 387890287511. The reversal of 387890287500 is 5782098783.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5134371 + ... + 5209370.

It is an arithmetic number, because the mean of its divisors is an integer number (15712144098).

Almost surely, 2^387890287500 is an apocalyptic number.

387890287500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387890287500 is an abundant number, since it is smaller than the sum of its proper divisors (743384087556).

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

387890287500 is a wasteful number, since it uses less digits than its factorization.

387890287500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343773 (or 10343751 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 387890287500 in words is "three hundred eighty-seven billion, eight hundred ninety million, two hundred eighty-seven thousand, five hundred".