1329072 has 20 divisors (see below), whose sum is σ = 3433560. Its totient is φ = 443008.

The previous prime is 1329067. The next prime is 1329073. The reversal of 1329072 is 2709231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1329073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13797 + ... + 13892.

It is an arithmetic number, because the mean of its divisors is an integer number (171678).

2^1329072 is an apocalyptic number.

1329072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1329072 is an abundant number, since it is smaller than the sum of its proper divisors (2104488).

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

1329072 is a wasteful number, since it uses less digits than its factorization.

1329072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27700 (or 27694 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1329072 is about 1152.8538502343. The cubic root of 1329072 is about 109.9468613864.

The spelling of 1329072 in words is "one million, three hundred twenty-nine thousand, seventy-two".