1928668 has 12 divisors (see below), whose sum is σ = 3857392. Its totient is φ = 826560.

The previous prime is 1928659. The next prime is 1928677. The reversal of 1928668 is 8668291.

It is an interprime number because it is at equal distance from previous prime (1928659) and next prime (1928677).

1928668 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1928668.

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, 34413 + ... + 34468.

2^1928668 is an apocalyptic number.

It is an amenable number.

1928668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1928668 is a wasteful number, since it uses less digits than its factorization.

1928668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68892 (or 68890 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 1928668 is about 1388.7649189118. The cubic root of 1928668 is about 124.4760576100.

The spelling of 1928668 in words is "one million, nine hundred twenty-eight thousand, six hundred sixty-eight".