16678004 has 24 divisors (see below), whose sum is σ = 33479040. Its totient is φ = 7121376.

The previous prime is 16678001. The next prime is 16678007. The reversal of 16678004 is 40087661.

It is an interprime number because it is at equal distance from previous prime (16678001) and next prime (16678007).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16678001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7937 + ... + 9815.

It is an arithmetic number, because the mean of its divisors is an integer number (1394960).

Almost surely, 2^16678004 is an apocalyptic number.

16678004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16678004 is an abundant number, since it is smaller than the sum of its proper divisors (16801036).

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

16678004 is a wasteful number, since it uses less digits than its factorization.

16678004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2205 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 16678004 is about 4083.8712026703. The cubic root of 16678004 is about 255.4943837063.

The spelling of 16678004 in words is "sixteen million, six hundred seventy-eight thousand, four".