787720120 has 64 divisors (see below), whose sum is σ = 1936677600. Its totient is φ = 285972480.

The previous prime is 787720117. The next prime is 787720133. The reversal of 787720120 is 21027787.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376036 + ... + 378124.

Almost surely, 2^787720120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787720120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968338800).

787720120 is an abundant number, since it is smaller than the sum of its proper divisors (1148957480).

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

787720120 is a wasteful number, since it uses less digits than its factorization.

787720120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 787720120 is about 28066.3520964161. The cubic root of 787720120 is about 923.5434080286.

The spelling of 787720120 in words is "seven hundred eighty-seven million, seven hundred twenty thousand, one hundred twenty".