1440630 has 24 divisors (see below), whose sum is σ = 3745872. Its totient is φ = 384144.

The previous prime is 1440623. The next prime is 1440641. The reversal of 1440630 is 360441.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7914 + ... + 8093.

It is an arithmetic number, because the mean of its divisors is an integer number (156078).

2^1440630 is an apocalyptic number.

1440630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1440630 is an abundant number, since it is smaller than the sum of its proper divisors (2305242).

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

1440630 is a wasteful number, since it uses less digits than its factorization.

1440630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16020 (or 16017 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1440630 is about 1200.2624712953. The cubic root of 1440630 is about 112.9407891952.

The spelling of 1440630 in words is "one million, four hundred forty thousand, six hundred thirty".