1445868 has 18 divisors (see below), whose sum is σ = 3654924. Its totient is φ = 481944.

The previous prime is 1445863. The next prime is 1445879. The reversal of 1445868 is 8685441.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 40163 = 1445868 / (1 + 4 + 4 + 5 + 8 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (1445863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20046 + ... + 20117.

2^1445868 is an apocalyptic number.

1445868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1445868 is an abundant number, since it is smaller than the sum of its proper divisors (2209056).

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

1445868 is a wasteful number, since it uses less digits than its factorization.

1445868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40173 (or 40168 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 1445868 is about 1202.4425142185. The cubic root of 1445868 is about 113.0775044556.

The spelling of 1445868 in words is "one million, four hundred forty-five thousand, eight hundred sixty-eight".