1442644 has 24 divisors (see below), whose sum is σ = 2932160. Its totient is φ = 608256.

The previous prime is 1442641. The next prime is 1442653. The reversal of 1442644 is 4462441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492 + ... + 2260.

2^1442644 is an apocalyptic number.

1442644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1442644 is an abundant number, since it is smaller than the sum of its proper divisors (1489516).

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

1442644 is a wasteful number, since it uses less digits than its factorization.

1442644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 845 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 1442644 is about 1201.1011614348. The cubic root of 1442644 is about 112.9933950769.

The spelling of 1442644 in words is "one million, four hundred forty-two thousand, six hundred forty-four".