1428618015 has 48 divisors (see below), whose sum is σ = 2715148800. Its totient is φ = 689135040.

The previous prime is 1428618013. The next prime is 1428618017. The reversal of 1428618015 is 5108168241.

1428618015 is a `hidden beast` number, since 1 + 4 + 28 + 618 + 0 + 15 = 666.

It is an interprime number because it is at equal distance from previous prime (1428618013) and next prime (1428618017).

It is not a de Polignac number, because 1428618015 - 2¹ = 1428618013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428618013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91254 + ... + 105756.

It is an arithmetic number, because the mean of its divisors is an integer number (56565600).

Almost surely, 2^1428618015 is an apocalyptic number.

1428618015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1428618015 is a deficient number, since it is larger than the sum of its proper divisors (1286530785).

1428618015 is a wasteful number, since it uses less digits than its factorization.

1428618015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14724 (or 14721 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1428618015 is about 37797.0635764209. The cubic root of 1428618015 is about 1126.2601228127.

The spelling of 1428618015 in words is "one billion, four hundred twenty-eight million, six hundred eighteen thousand, fifteen".