1438264 has 32 divisors (see below), whose sum is σ = 2859120. Its totient is φ = 677376.

The previous prime is 1438253. The next prime is 1438267. The reversal of 1438264 is 4628341.

1438264 = T₁₅₉ + T₁₆₀ + ... + T₂₃₂.

1438264 = 52² + 53² + ... + 164².

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438267) by changing a digit.

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, 12672 + ... + 12784.

2^1438264 is an apocalyptic number.

It is an amenable number.

1438264 is a deficient number, since it is larger than the sum of its proper divisors (1420856).

1438264 is a wasteful number, since it uses less digits than its factorization.

1438264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 195 counting only the distinct ones).

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

The square root of 1438264 is about 1199.2764485305. The cubic root of 1438264 is about 112.8789263694.

The spelling of 1438264 in words is "one million, four hundred thirty-eight thousand, two hundred sixty-four".