7887913920 has 112 divisors (see below), whose sum is σ = 27826837920. Its totient is φ = 2103441408.

The previous prime is 7887913903. The next prime is 7887913933. The reversal of 7887913920 is 293197887.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 447837 + ... + 465116.

It is an arithmetic number, because the mean of its divisors is an integer number (248453910).

Almost surely, 2^7887913920 is an apocalyptic number.

It is an amenable number.

7887913920 is an abundant number, since it is smaller than the sum of its proper divisors (19938924000).

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

7887913920 is a wasteful number, since it uses less digits than its factorization.

7887913920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912979 (or 912963 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 7887913920 is about 88813.9286373483. The cubic root of 7887913920 is about 1990.6155280493.

The spelling of 7887913920 in words is "seven billion, eight hundred eighty-seven million, nine hundred thirteen thousand, nine hundred twenty".