1328464 has 20 divisors (see below), whose sum is σ = 2608960. Its totient is φ = 655200.

The previous prime is 1328449. The next prime is 1328473. The reversal of 1328464 is 4648231.

1328464 = T₂₇₂ + T₂₇₃ + ... + T₃₀₃.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739 + ... + 1789.

It is an arithmetic number, because the mean of its divisors is an integer number (130448).

2^1328464 is an apocalyptic number.

It is an amenable number.

1328464 is a deficient number, since it is larger than the sum of its proper divisors (1280496).

1328464 is a wasteful number, since it uses less digits than its factorization.

1328464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 1328464 is about 1152.5901266278. The cubic root of 1328464 is about 109.9300933237.

The spelling of 1328464 in words is "one million, three hundred twenty-eight thousand, four hundred sixty-four".