1338623 has 24 divisors (see below), whose sum is σ = 1698144. Its totient is φ = 1045440.

The previous prime is 1338587. The next prime is 1338637. The reversal of 1338623 is 3268331.

It is not a de Polignac number, because 1338623 - 2⁶ = 1338559 is a prime.

It is a super-2 number, since 2×1338623² = 3583823072258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1338592 and 1338601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36161 + ... + 36197.

It is an arithmetic number, because the mean of its divisors is an integer number (70756).

2^1338623 is an apocalyptic number.

1338623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1338623 is a deficient number, since it is larger than the sum of its proper divisors (359521).

1338623 is a wasteful number, since it uses less digits than its factorization.

1338623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 84 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 1338623 is about 1156.9887639904. The cubic root of 1338623 is about 110.2096003617.

Adding to 1338623 its sum of digits (26), we get a square (1338649 = 1157²).

The spelling of 1338623 in words is "one million, three hundred thirty-eight thousand, six hundred twenty-three".