1909248 has 80 divisors (see below), whose sum is σ = 5597856. Its totient is φ = 573440.

The previous prime is 1909241. The next prime is 1909267. The reversal of 1909248 is 8429091.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1909241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16840 + ... + 16952.

2^1909248 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 1909248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798928).

1909248 is an abundant number, since it is smaller than the sum of its proper divisors (3688608).

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

1909248 is a wasteful number, since it uses less digits than its factorization.

1909248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1909248 is about 1381.7554052726. The cubic root of 1909248 is about 124.0568591128.

The spelling of 1909248 in words is "one million, nine hundred nine thousand, two hundred forty-eight".