1097320 has 32 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 376128.

The previous prime is 1097297. The next prime is 1097321. The reversal of 1097320 is 237901.

It is a super-2 number, since 2×1097320² = 2408222364800, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1097291 and 1097300.

It is not an unprimeable number, because it can be changed into a prime (1097321) 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, 1680 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1097320 is an apocalyptic number.

1097320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1097320 is an abundant number, since it is smaller than the sum of its proper divisors (1725080).

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

1097320 is a wasteful number, since it uses less digits than its factorization.

1097320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3933 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1097320 is about 1047.5304291523. The cubic root of 1097320 is about 103.1441097124.

The spelling of 1097320 in words is "one million, ninety-seven thousand, three hundred twenty".