787240 has 16 divisors (see below), whose sum is σ = 1771380. Its totient is φ = 314880.

The previous prime is 787217. The next prime is 787243. The reversal of 787240 is 42787.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 51076 = 858^2 + 226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 787199 and 787208.

It is not an unprimeable number, because it can be changed into a prime (787243) 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, 9801 + ... + 9880.

2⁷⁸⁷²⁴⁰ is an apocalyptic number.

It is an amenable number.

787240 is an abundant number, since it is smaller than the sum of its proper divisors (984140).

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

787240 is a wasteful number, since it uses less digits than its factorization.

787240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19692 (or 19688 counting only the distinct ones).

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

The square root of 787240 is about 887.2654619673. The cubic root of 787240 is about 92.3355734866.

The spelling of 787240 in words is "seven hundred eighty-seven thousand, two hundred forty".