1223830 has 32 divisors (see below), whose sum is σ = 2441664. Its totient is φ = 439296.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223830 is 383221.

It is a happy number.

1223830 is a nontrivial binomial coefficient, being equal to C(1565, 2).

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1223798 and 1223807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3754 + ... + 4066.

It is an arithmetic number, because the mean of its divisors is an integer number (76302).

2^1223830 is an apocalyptic number.

1223830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223830 is the 1564-th triangular number.

1223830 is the 522-nd centered nonagonal number.

1223830 is a deficient number, since it is larger than the sum of its proper divisors (1217834).

1223830 is a wasteful number, since it uses less digits than its factorization.

1223830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1223830 is about 1106.2685026701. The cubic root of 1223830 is about 106.9646722981.

The spelling of 1223830 in words is "one million, two hundred twenty-three thousand, eight hundred thirty".