1919712 has 24 divisors (see below), whose sum is σ = 5039496. Its totient is φ = 639872.

The previous prime is 1919711. The next prime is 1919719. The reversal of 1919712 is 2179191.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1919712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9903 + ... + 10094.

It is an arithmetic number, because the mean of its divisors is an integer number (209979).

2^1919712 is an apocalyptic number.

1919712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1919712 is an abundant number, since it is smaller than the sum of its proper divisors (3119784).

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

1919712 is a wasteful number, since it uses less digits than its factorization.

1919712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20010 (or 20002 counting only the distinct ones).

The product of its digits is 1134, while the sum is 30.

The square root of 1919712 is about 1385.5367191092. The cubic root of 1919712 is about 124.2830854624.

The spelling of 1919712 in words is "one million, nine hundred nineteen thousand, seven hundred twelve".