1244638 has 8 divisors (see below), whose sum is σ = 1976832. Its totient is φ = 585696.

The previous prime is 1244629. The next prime is 1244647. The reversal of 1244638 is 8364421.

It is an interprime number because it is at equal distance from previous prime (1244629) and next prime (1244647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18270 + ... + 18337.

It is an arithmetic number, because the mean of its divisors is an integer number (247104).

2^1244638 is an apocalyptic number.

1244638 is a deficient number, since it is larger than the sum of its proper divisors (732194).

1244638 is a wasteful number, since it uses less digits than its factorization.

1244638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36626.

The product of its digits is 4608, while the sum is 28.

The square root of 1244638 is about 1115.6334523489. The cubic root of 1244638 is about 107.5674860187.

The spelling of 1244638 in words is "one million, two hundred forty-four thousand, six hundred thirty-eight".