1445680 has 40 divisors (see below), whose sum is σ = 3562272. Its totient is φ = 543744.

The previous prime is 1445671. The next prime is 1445687. The reversal of 1445680 is 865441.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1445687) 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, 829 + ... + 1891.

2^1445680 is an apocalyptic number.

1445680 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 1445680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781136).

1445680 is an abundant number, since it is smaller than the sum of its proper divisors (2116592).

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

1445680 is a wasteful number, since it uses less digits than its factorization.

1445680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1445680 is about 1202.3643374618. The cubic root of 1445680 is about 113.0726032493.

The spelling of 1445680 in words is "one million, four hundred forty-five thousand, six hundred eighty".