787252880 has 20 divisors (see below), whose sum is σ = 1830363132. Its totient is φ = 314901120.

The previous prime is 787252877. The next prime is 787252889. The reversal of 787252880 is 88252787.

It can be written as a sum of positive squares in 2 ways, for example, as 496754944 + 290497936 = 22288^2 + 17044^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (787252889) 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, 4920251 + ... + 4920410.

Almost surely, 2^787252880 is an apocalyptic number.

It is an amenable number.

787252880 is an abundant number, since it is smaller than the sum of its proper divisors (1043110252).

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

787252880 is a wasteful number, since it uses less digits than its factorization.

787252880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9840674 (or 9840668 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 787252880 is about 28058.0270154550. The cubic root of 787252880 is about 923.3607704996.

The spelling of 787252880 in words is "seven hundred eighty-seven million, two hundred fifty-two thousand, eight hundred eighty".