1345520 has 60 divisors (see below), whose sum is σ = 3463320. Its totient is φ = 485760.

The previous prime is 1345507. The next prime is 1345537. The reversal of 1345520 is 255431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1345492 and 1345501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9611 + ... + 9749.

It is an arithmetic number, because the mean of its divisors is an integer number (57722).

2^1345520 is an apocalyptic number.

1345520 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 1345520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731660).

1345520 is an abundant number, since it is smaller than the sum of its proper divisors (2117800).

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

1345520 is a wasteful number, since it uses less digits than its factorization.

1345520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1345520 is about 1159.9655167288. The cubic root of 1345520 is about 110.3985542064.

1345520 divided by its sum of digits (20) gives a palindrome (67276).

The spelling of 1345520 in words is "one million, three hundred forty-five thousand, five hundred twenty".