1445864 has 16 divisors (see below), whose sum is σ = 3098400. Its totient is φ = 619632.

The previous prime is 1445863. The next prime is 1445879. The reversal of 1445864 is 4685441.

It is a self number, because there is not a number n which added to its sum of digits gives 1445864.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12854 + ... + 12965.

It is an arithmetic number, because the mean of its divisors is an integer number (193650).

2^1445864 is an apocalyptic number.

1445864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1445864 is an abundant number, since it is smaller than the sum of its proper divisors (1652536).

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

1445864 is a wasteful number, since it uses less digits than its factorization.

1445864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25832 (or 25828 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 1445864 is about 1202.4408509361. The cubic root of 1445864 is about 113.0774001791.

The spelling of 1445864 in words is "one million, four hundred forty-five thousand, eight hundred sixty-four".