780252880 has 40 divisors (see below), whose sum is σ = 1979007264. Its totient is φ = 283728000.

The previous prime is 780252877. The next prime is 780252911. The reversal of 780252880 is 88252087.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442446 + ... + 444205.

Almost surely, 2^780252880 is an apocalyptic number.

It is an amenable number.

780252880 is an abundant number, since it is smaller than the sum of its proper divisors (1198754384).

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

780252880 is a wasteful number, since it uses less digits than its factorization.

780252880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886675 (or 886669 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 780252880 is about 27933.0069988893. The cubic root of 780252880 is about 920.6158762164.

The spelling of 780252880 in words is "seven hundred eighty million, two hundred fifty-two thousand, eight hundred eighty".