1378223 has 12 divisors (see below), whose sum is σ = 1749672. Its totient is φ = 1073520.

The previous prime is 1378219. The next prime is 1378231. The reversal of 1378223 is 3228731.

It is not a de Polignac number, because 1378223 - 2² = 1378219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1378192 and 1378201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740 + ... + 1817.

It is an arithmetic number, because the mean of its divisors is an integer number (145806).

2^1378223 is an apocalyptic number.

1378223 is a deficient number, since it is larger than the sum of its proper divisors (371449).

1378223 is a wasteful number, since it uses less digits than its factorization.

1378223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2575 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 1378223 is about 1173.9774273810. The cubic root of 1378223 is about 111.2858202206.

The spelling of 1378223 in words is "one million, three hundred seventy-eight thousand, two hundred twenty-three".