87838732820 has 48 divisors (see below), whose sum is σ = 193594181760. Its totient is φ = 33413567616.

The previous prime is 87838732801. The next prime is 87838732831. The reversal of 87838732820 is 2823783878.

It is a congruent number.

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, 472310 + ... + 631469.

It is an arithmetic number, because the mean of its divisors is an integer number (4033212120).

Almost surely, 2^87838732820 is an apocalyptic number.

It is an amenable number.

87838732820 is an abundant number, since it is smaller than the sum of its proper divisors (105755448940).

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

87838732820 is a wasteful number, since it uses less digits than its factorization.

87838732820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103984 (or 1103982 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 87838732820 in words is "eighty-seven billion, eight hundred thirty-eight million, seven hundred thirty-two thousand, eight hundred twenty".