1264438 has 16 divisors (see below), whose sum is σ = 2227104. Its totient is φ = 527040.

The previous prime is 1264411. The next prime is 1264447. The reversal of 1264438 is 8344621.

1264438 = T₉₂ + T₉₃ + ... + T₂₀₂.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (139194).

2^1264438 is an apocalyptic number.

1264438 is a deficient number, since it is larger than the sum of its proper divisors (962666).

1264438 is a wasteful number, since it uses less digits than its factorization.

1264438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

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

The square root of 1264438 is about 1124.4723206909. The cubic root of 1264438 is about 108.1348908947.

The spelling of 1264438 in words is "one million, two hundred sixty-four thousand, four hundred thirty-eight".