1345980 has 24 divisors (see below), whose sum is σ = 3768912. Its totient is φ = 358912.

The previous prime is 1345973. The next prime is 1345987. The reversal of 1345980 is 895431.

It is an interprime number because it is at equal distance from previous prime (1345973) and next prime (1345987).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345987) 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, 11157 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (157038).

2^1345980 is an apocalyptic number.

1345980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345980 is an abundant number, since it is smaller than the sum of its proper divisors (2422932).

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

1345980 is a wasteful number, since it uses less digits than its factorization.

1345980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22445 (or 22443 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1345980 is about 1160.1637815412. The cubic root of 1345980 is about 110.4111336178.

The spelling of 1345980 in words is "one million, three hundred forty-five thousand, nine hundred eighty".