1444780 has 48 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 535808.

The previous prime is 1444777. The next prime is 1444787. The reversal of 1444780 is 874441.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1444787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27234 + ... + 27286.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^1444780 is an apocalyptic number.

1444780 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 1444780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960).

1444780 is an abundant number, since it is smaller than the sum of its proper divisors (1821140).

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

1444780 is a wasteful number, since it uses less digits than its factorization.

1444780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1444780 is about 1201.9900165975. The cubic root of 1444780 is about 113.0491341394.

The spelling of 1444780 in words is "one million, four hundred forty-four thousand, seven hundred eighty".