628782424 has 16 divisors (see below), whose sum is σ = 1216998720. Its totient is φ = 304249440.

The previous prime is 628782377. The next prime is 628782457. The reversal of 628782424 is 424287826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267459 + ... + 1267954.

It is an arithmetic number, because the mean of its divisors is an integer number (76062420).

Almost surely, 2^628782424 is an apocalyptic number.

It is an amenable number.

628782424 is a deficient number, since it is larger than the sum of its proper divisors (588216296).

628782424 is a wasteful number, since it uses less digits than its factorization.

628782424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535450 (or 2535446 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 628782424 is about 25075.5343711754. The cubic root of 628782424 is about 856.7092667241.

The spelling of 628782424 in words is "six hundred twenty-eight million, seven hundred eighty-two thousand, four hundred twenty-four".