1916288 has 32 divisors (see below), whose sum is σ = 4167720. Its totient is φ = 870400.

The previous prime is 1916287. The next prime is 1916293. The reversal of 1916288 is 8826191.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916281) 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, 728 + ... + 2088.

2^1916288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2083860).

1916288 is an abundant number, since it is smaller than the sum of its proper divisors (2251432).

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

1916288 is a wasteful number, since it uses less digits than its factorization.

1916288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1374 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 1916288 is about 1384.3005454019. The cubic root of 1916288 is about 124.2091510152.

Subtracting 1916288 from its reverse (8826191), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1916288 in words is "one million, nine hundred sixteen thousand, two hundred eighty-eight".