787023680 has 28 divisors (see below), whose sum is σ = 1874100900. Its totient is φ = 314809344.

The previous prime is 787023673. The next prime is 787023689. The reversal of 787023680 is 86320787.

It can be written as a sum of positive squares in 2 ways, for example, as 401922304 + 385101376 = 20048^2 + 19624^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787023689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229405 + ... + 1230044.

It is an arithmetic number, because the mean of its divisors is an integer number (66932175).

Almost surely, 2^787023680 is an apocalyptic number.

It is an amenable number.

787023680 is an abundant number, since it is smaller than the sum of its proper divisors (1087077220).

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

787023680 is a wasteful number, since it uses less digits than its factorization.

787023680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459466 (or 2459456 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 787023680 is about 28053.9423254558. The cubic root of 787023680 is about 923.2711530312.

The spelling of 787023680 in words is "seven hundred eighty-seven million, twenty-three thousand, six hundred eighty".