1920168 has 24 divisors (see below), whose sum is σ = 5200650. Its totient is φ = 640032.

The previous prime is 1920161. The next prime is 1920173. The reversal of 1920168 is 8610291.

It can be written as a sum of positive squares in only one way, i.e., 1077444 + 842724 = 1038^2 + 918^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1920161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13263 + ... + 13406.

2^1920168 is an apocalyptic number.

1920168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1920168 is an abundant number, since it is smaller than the sum of its proper divisors (3280482).

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

1920168 is a wasteful number, since it uses less digits than its factorization.

1920168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26681 (or 26674 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1920168 is about 1385.7012665073. The cubic root of 1920168 is about 124.2929252370.

The spelling of 1920168 in words is "one million, nine hundred twenty thousand, one hundred sixty-eight".