1229328 has 30 divisors (see below), whose sum is σ = 3440814. Its totient is φ = 409728.

The previous prime is 1229317. The next prime is 1229329. The reversal of 1229328 is 8239221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 36864 = 1092^2 + 192^2 .

It is a super-2 number, since 2×1229328² = 3022494663168, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1229329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4125 + ... + 4412.

2^1229328 is an apocalyptic number.

1229328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1229328 is an abundant number, since it is smaller than the sum of its proper divisors (2211486).

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

1229328 is a wasteful number, since it uses less digits than its factorization.

1229328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551 (or 8542 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1229328 is about 1108.7506482523. The cubic root of 1229328 is about 107.1246109881.

It can be divided in two parts, 12293 and 28, that added together give a palindrome (12321).

The spelling of 1229328 in words is "one million, two hundred twenty-nine thousand, three hundred twenty-eight".