264378 has 16 divisors (see below), whose sum is σ = 534240. Its totient is φ = 87216.

The previous prime is 264371. The next prime is 264391. The reversal of 264378 is 873462.

It is a d-powerful number, because it can be written as 2 + 6⁴ + 3⁴ + 4⁹ + 7³ + 8³ .

It is not an unprimeable number, because it can be changed into a prime (264371) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 676 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (33390).

2²⁶⁴³⁷⁸ is an apocalyptic number.

264378 is an abundant number, since it is smaller than the sum of its proper divisors (269862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264378 is a wasteful number, since it uses less digits than its factorization.

264378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its digits is 8064, while the sum is 30.

The square root of 264378 is about 514.1770123216. The cubic root of 264378 is about 64.1812893718.

The spelling of 264378 in words is "two hundred sixty-four thousand, three hundred seventy-eight".