1916560 has 20 divisors (see below), whose sum is σ = 4456188. Its totient is φ = 766592.

The previous prime is 1916543. The next prime is 1916573. The reversal of 1916560 is 656191.

It can be written as a sum of positive squares in 2 ways, for example, as 1149184 + 767376 = 1072^2 + 876^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 11899 + ... + 12058.

2^1916560 is an apocalyptic number.

1916560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916560 is an abundant number, since it is smaller than the sum of its proper divisors (2539628).

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

1916560 is a wasteful number, since it uses less digits than its factorization.

1916560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23964 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1916560 is about 1384.3987864774. The cubic root of 1916560 is about 124.2150275311.

The spelling of 1916560 in words is "one million, nine hundred sixteen thousand, five hundred sixty".