787420 has 12 divisors (see below), whose sum is σ = 1653624. Its totient is φ = 314960.

The previous prime is 787361. The next prime is 787427. The reversal of 787420 is 24787.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787427) 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, 19666 + ... + 19705.

It is an arithmetic number, because the mean of its divisors is an integer number (137802).

2⁷⁸⁷⁴²⁰ is an apocalyptic number.

It is an amenable number.

787420 is an abundant number, since it is smaller than the sum of its proper divisors (866204).

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

787420 is a wasteful number, since it uses less digits than its factorization.

787420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39380 (or 39378 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 787420 is about 887.3668914265. The cubic root of 787420 is about 92.3426103651.

The spelling of 787420 in words is "seven hundred eighty-seven thousand, four hundred twenty".