1440284 has 6 divisors (see below), whose sum is σ = 2520504. Its totient is φ = 720140.

The previous prime is 1440269. The next prime is 1440293. The reversal of 1440284 is 4820441.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180032 + ... + 180039.

It is an arithmetic number, because the mean of its divisors is an integer number (420084).

2^1440284 is an apocalyptic number.

It is an amenable number.

1440284 is a deficient number, since it is larger than the sum of its proper divisors (1080220).

1440284 is a wasteful number, since it uses less digits than its factorization.

1440284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360075 (or 360073 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1440284 is about 1200.1183274994. The cubic root of 1440284 is about 112.9317467064.

The spelling of 1440284 in words is "one million, four hundred forty thousand, two hundred eighty-four".