1445978 has 8 divisors (see below), whose sum is σ = 2185920. Its totient is φ = 717340.

The previous prime is 1445971. The next prime is 1445981. The reversal of 1445978 is 8795441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1445971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (273240).

2^1445978 is an apocalyptic number.

1445978 is a deficient number, since it is larger than the sum of its proper divisors (739942).

1445978 is a wasteful number, since it uses less digits than its factorization.

1445978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652.

The product of its digits is 40320, while the sum is 38.

The square root of 1445978 is about 1202.4882535809. The cubic root of 1445978 is about 113.0803719857.

The spelling of 1445978 in words is "one million, four hundred forty-five thousand, nine hundred seventy-eight".