1091248 has 20 divisors (see below), whose sum is σ = 2130568. Its totient is φ = 541440.

The previous prime is 1091243. The next prime is 1091257. The reversal of 1091248 is 8421901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1091243) 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, 3715 + ... + 3997.

2^1091248 is an apocalyptic number.

It is an amenable number.

1091248 is a deficient number, since it is larger than the sum of its proper divisors (1039320).

1091248 is a wasteful number, since it uses less digits than its factorization.

1091248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1091248 is about 1044.6281635108. The cubic root of 1091248 is about 102.9535090403.

It can be divided in two parts, 10912 and 48, that multiplied together give a triangular number (523776 = T₁₀₂₃).

The spelling of 1091248 in words is "one million, ninety-one thousand, two hundred forty-eight".