1214638 has 4 divisors (see below), whose sum is σ = 1821960. Its totient is φ = 607318.

The previous prime is 1214623. The next prime is 1214639. The reversal of 1214638 is 8364121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8364121 = 73 ⋅114577.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303658 + ... + 303661.

It is an arithmetic number, because the mean of its divisors is an integer number (455490).

2^1214638 is an apocalyptic number.

1214638 is a deficient number, since it is larger than the sum of its proper divisors (607322).

1214638 is an equidigital number, since it uses as much as digits as its factorization.

1214638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607321.

The product of its digits is 1152, while the sum is 25.

The square root of 1214638 is about 1102.1061654850. The cubic root of 1214638 is about 106.6962005892.

Adding to 1214638 its reverse (8364121), we get a palindrome (9578759).

The spelling of 1214638 in words is "one million, two hundred fourteen thousand, six hundred thirty-eight".