1331072 has 16 divisors (see below), whose sum is σ = 2652000. Its totient is φ = 665472.

The previous prime is 1331063. The next prime is 1331093. The reversal of 1331072 is 2701331.

It is a tau number, because it is divible by the number of its divisors (16).

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 1331072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5072 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (165750).

2^1331072 is an apocalyptic number.

It is an amenable number.

1331072 is a deficient number, since it is larger than the sum of its proper divisors (1320928).

1331072 is an equidigital number, since it uses as much as digits as its factorization.

1331072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10413 (or 10401 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1331072 is about 1153.7209367954. The cubic root of 1331072 is about 110.0019834353.

The spelling of 1331072 in words is "one million, three hundred thirty-one thousand, seventy-two".