1678418028 has 36 divisors (see below), whose sum is σ = 4848763920. Its totient is φ = 479547936.

The previous prime is 1678417999. The next prime is 1678418033. The reversal of 1678418028 is 8208148761.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3329943 + ... + 3330446.

Almost surely, 2^1678418028 is an apocalyptic number.

1678418028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1678418028 is an abundant number, since it is smaller than the sum of its proper divisors (3170345892).

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

1678418028 is a wasteful number, since it uses less digits than its factorization.

1678418028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660406 (or 6660401 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1678418028 is about 40968.5004363108. The cubic root of 1678418028 is about 1188.4111337619.

The spelling of 1678418028 in words is "one billion, six hundred seventy-eight million, four hundred eighteen thousand, twenty-eight".