1445280 has 48 divisors (see below), whose sum is σ = 4554144. Its totient is φ = 385280.

The previous prime is 1445261. The next prime is 1445287. The reversal of 1445280 is 825441.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 1445280.

It is not an unprimeable number, because it can be changed into a prime (1445287) 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, 1026 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (94878).

2^1445280 is an apocalyptic number.

1445280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445280 is an abundant number, since it is smaller than the sum of its proper divisors (3108864).

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

1445280 is a wasteful number, since it uses less digits than its factorization.

1445280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029 (or 3021 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1445280 is about 1202.1979870221. The cubic root of 1445280 is about 113.0621737367.

The spelling of 1445280 in words is "one million, four hundred forty-five thousand, two hundred eighty".