1438630 has 16 divisors (see below), whose sum is σ = 2603664. Its totient is φ = 572320.

The previous prime is 1438609. The next prime is 1438643. The reversal of 1438630 is 368341.

It is a junction number, because it is equal to n+sod(n) for n = 1438595 and 1438604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (162729).

2^1438630 is an apocalyptic number.

1438630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438630 is a deficient number, since it is larger than the sum of its proper divisors (1165034).

1438630 is a wasteful number, since it uses less digits than its factorization.

1438630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1438630 is about 1199.4290308309. The cubic root of 1438630 is about 112.8885004539. Note that the first 3 decimals are identical.

The spelling of 1438630 in words is "one million, four hundred thirty-eight thousand, six hundred thirty".