1248440 has 48 divisors (see below), whose sum is σ = 2986200. Its totient is φ = 469568.

The previous prime is 1248427. The next prime is 1248449. The reversal of 1248440 is 448421.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21131 + ... + 21189.

2^1248440 is an apocalyptic number.

1248440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1248440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493100).

1248440 is an abundant number, since it is smaller than the sum of its proper divisors (1737760).

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

1248440 is a wasteful number, since it uses less digits than its factorization.

1248440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1248440 is about 1117.3361177372. The cubic root of 1248440 is about 107.6769036052.

The spelling of 1248440 in words is "one million, two hundred forty-eight thousand, four hundred forty".