1223900 has 18 divisors (see below), whose sum is σ = 2656080. Its totient is φ = 489520.

The previous prime is 1223897. The next prime is 1223921. The reversal of 1223900 is 93221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6020 + ... + 6219.

It is an arithmetic number, because the mean of its divisors is an integer number (147560).

2^1223900 is an apocalyptic number.

1223900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223900 is an abundant number, since it is smaller than the sum of its proper divisors (1432180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223900 is a wasteful number, since it uses less digits than its factorization.

1223900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12253 (or 12246 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1223900 is about 1106.3001401067. The cubic root of 1223900 is about 106.9667116293.

It can be divided in two parts, 122 and 3900, that multiplied together give a triangular number (475800 = T₉₇₅).

The spelling of 1223900 in words is "one million, two hundred twenty-three thousand, nine hundred".