1328455 has 8 divisors (see below), whose sum is σ = 1628352. Its totient is φ = 1039968.

The previous prime is 1328449. The next prime is 1328473. The reversal of 1328455 is 5548231.

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 1328455 - 2³ = 1328447 is a prime.

It is a super-3 number, since 3×1328455³ = 7033343007125389125, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

1328455 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2592 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (203544).

2^1328455 is an apocalyptic number.

1328455 is a deficient number, since it is larger than the sum of its proper divisors (299897).

1328455 is an equidigital number, since it uses as much as digits as its factorization.

1328455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705.

The product of its digits is 4800, while the sum is 28.

The square root of 1328455 is about 1152.5862223712. The cubic root of 1328455 is about 109.9298450738.

It can be divided in two parts, 132845 and 5, that multiplied together give a square (664225 = 815²).

The spelling of 1328455 in words is "one million, three hundred twenty-eight thousand, four hundred fifty-five".