787323840 has 56 divisors (see below), whose sum is σ = 2499756240. Its totient is φ = 209952768.

The previous prime is 787323827. The next prime is 787323847. The reversal of 787323840 is 48323787.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 787323792 and 787323801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787323847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409105 + ... + 411024.

Almost surely, 2^787323840 is an apocalyptic number.

It is an amenable number.

787323840 is an abundant number, since it is smaller than the sum of its proper divisors (1712432400).

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

787323840 is a wasteful number, since it uses less digits than its factorization.

787323840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820149 (or 820139 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 787323840 is about 28059.2915092309. The cubic root of 787323840 is about 923.3885124164.

It can be divided in two parts, 7873 and 23840, that added together give a palindrome (31713).

The spelling of 787323840 in words is "seven hundred eighty-seven million, three hundred twenty-three thousand, eight hundred forty".