1911448 has 64 divisors (see below), whose sum is σ = 4665600. Its totient is φ = 712320.

The previous prime is 1911439. The next prime is 1911451. The reversal of 1911448 is 8441191.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17811 + ... + 17917.

It is an arithmetic number, because the mean of its divisors is an integer number (72900).

2^1911448 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 1911448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332800).

1911448 is an abundant number, since it is smaller than the sum of its proper divisors (2754152).

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

1911448 is a wasteful number, since it uses less digits than its factorization.

1911448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 156 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 1911448 is about 1382.5512648723. The cubic root of 1911448 is about 124.1044904888.

The spelling of 1911448 in words is "one million, nine hundred eleven thousand, four hundred forty-eight".