1428628518 has 24 divisors (see below), whose sum is σ = 3170860056. Its totient is φ = 464594400.

The previous prime is 1428628499. The next prime is 1428628561. The reversal of 1428628518 is 8158268241.

1428628518 is a `hidden beast` number, since 1 + 4 + 2 + 8 + 628 + 5 + 18 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 967168 + ... + 968643.

It is an arithmetic number, because the mean of its divisors is an integer number (132119169).

Almost surely, 2^1428628518 is an apocalyptic number.

1428628518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1428628518 is an abundant number, since it is smaller than the sum of its proper divisors (1742231538).

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

1428628518 is a wasteful number, since it uses less digits than its factorization.

1428628518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935860 (or 1935857 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 1428628518 is about 37797.2025155302. The cubic root of 1428628518 is about 1126.2628828416.

The spelling of 1428628518 in words is "one billion, four hundred twenty-eight million, six hundred twenty-eight thousand, five hundred eighteen".