787904 has 28 divisors (see below), whose sum is σ = 1685544. Its totient is φ = 363264.

The previous prime is 787903. The next prime is 787907. The reversal of 787904 is 409787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787903) 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, 359 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (60198).

2⁷⁸⁷⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842772).

787904 is an abundant number, since it is smaller than the sum of its proper divisors (897640).

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

787904 is a wasteful number, since it uses less digits than its factorization.

787904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 787904 is about 887.6395664908. The cubic root of 787904 is about 92.3615264324.

The spelling of 787904 in words is "seven hundred eighty-seven thousand, nine hundred four".