787120 has 20 divisors (see below), whose sum is σ = 1830240. Its totient is φ = 314816.

The previous prime is 787099. The next prime is 787123. The reversal of 787120 is 21787.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (787123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4840 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (91512).

2⁷⁸⁷¹²⁰ is an apocalyptic number.

It is an amenable number.

787120 is an abundant number, since it is smaller than the sum of its proper divisors (1043120).

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

787120 is a wasteful number, since it uses less digits than its factorization.

787120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 787120 is about 887.1978358855. The cubic root of 787120 is about 92.3308816383.

The spelling of 787120 in words is "seven hundred eighty-seven thousand, one hundred twenty".