1097040 has 80 divisors (see below), whose sum is σ = 3892608. Its totient is φ = 250368.

The previous prime is 1097039. The next prime is 1097051. The reversal of 1097040 is 407901.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1096998 and 1097016.

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, 1354 + ... + 2006.

2^1097040 is an apocalyptic number.

1097040 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 1097040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946304).

1097040 is an abundant number, since it is smaller than the sum of its proper divisors (2795568).

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

1097040 is a wasteful number, since it uses less digits than its factorization.

1097040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1097040 is about 1047.3967729566. The cubic root of 1097040 is about 103.1353359704.

The spelling of 1097040 in words is "one million, ninety-seven thousand, forty".