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BaseRepresentation
bin100101010101001011110
32022011000000
410222221132
5303121022
642115130
713253235
oct4525136
92264000
101223262
11766067
124abaa6
1333aa31
1423bb1c
151926ac
hex12aa5e

1223262 has 28 divisors (see below), whose sum is σ = 2754360. Its totient is φ = 407268.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223262 is 2623221.

Adding to 1223262 its reverse (2623221), we get a palindrome (3846483).

It can be divided in two parts, 1223 and 262, that added together give a triangular number (1485 = T54).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223263) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 1039 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (98370).

21223262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377180).

1223262 is an abundant number, since it is smaller than the sum of its proper divisors (1531098).

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

1223262 is an frugal number, since it uses more digits than its factorization.

1223262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 844 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1223262 is about 1106.0117540063. The cubic root of 1223262 is about 106.9481217054.

The spelling of 1223262 in words is "one million, two hundred twenty-three thousand, two hundred sixty-two".