1328737 has 8 divisors (see below), whose sum is σ = 1437696. Its totient is φ = 1223232.

The previous prime is 1328731. The next prime is 1328741. The reversal of 1328737 is 7378231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328737 - 2³ = 1328729 is a prime.

It is a Duffinian number.

1328737 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1328699 and 1328708.

It is not an unprimeable number, because it can be changed into a prime (1328731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (179712).

2^1328737 is an apocalyptic number.

1328737 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1328737 is a deficient number, since it is larger than the sum of its proper divisors (108959).

1328737 is a wasteful number, since it uses less digits than its factorization.

1328737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727.

The product of its digits is 7056, while the sum is 31.

The square root of 1328737 is about 1152.7085494608. The cubic root of 1328737 is about 109.9376230372.

The spelling of 1328737 in words is "one million, three hundred twenty-eight thousand, seven hundred thirty-seven".