1445920 has 48 divisors (see below), whose sum is σ = 3907008. Its totient is φ = 495360.

The previous prime is 1445887. The next prime is 1445921. The reversal of 1445920 is 295441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (81396).

2^1445920 is an apocalyptic number.

1445920 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 1445920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953504).

1445920 is an abundant number, since it is smaller than the sum of its proper divisors (2461088).

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

1445920 is a wasteful number, since it uses less digits than its factorization.

1445920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1445920 is about 1202.4641366793. The cubic root of 1445920 is about 113.0788600334.

It can be divided in two parts, 14459 and 20, that multiplied together give a triangular number (289180 = T₇₆₀).

The spelling of 1445920 in words is "one million, four hundred forty-five thousand, nine hundred twenty".