787381478 has 24 divisors (see below), whose sum is σ = 1284146136. Its totient is φ = 361920000.

The previous prime is 787381477. The next prime is 787381481. The reversal of 787381478 is 874183787.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787381477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80198 + ... + 89478.

It is an arithmetic number, because the mean of its divisors is an integer number (53506089).

Almost surely, 2^787381478 is an apocalyptic number.

787381478 is a deficient number, since it is larger than the sum of its proper divisors (496764658).

787381478 is a wasteful number, since it uses less digits than its factorization.

787381478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9547 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 53.

The square root of 787381478 is about 28060.3185655473. The cubic root of 787381478 is about 923.4110448508.

The spelling of 787381478 in words is "seven hundred eighty-seven million, three hundred eighty-one thousand, four hundred seventy-eight".