1331472 has 20 divisors (see below), whose sum is σ = 3439760. Its totient is φ = 443808.

The previous prime is 1331471. The next prime is 1331489. The reversal of 1331472 is 2741331.

It is a super-3 number, since 3×1331472³ = 7081371333172998144, which contains 333 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1331471) 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, 13822 + ... + 13917.

It is an arithmetic number, because the mean of its divisors is an integer number (171988).

2^1331472 is an apocalyptic number.

1331472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331472 is an abundant number, since it is smaller than the sum of its proper divisors (2108288).

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

1331472 is a wasteful number, since it uses less digits than its factorization.

1331472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27750 (or 27744 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 1331472 is about 1153.8942759196. The cubic root of 1331472 is about 110.0130012181.

The spelling of 1331472 in words is "one million, three hundred thirty-one thousand, four hundred seventy-two".