264378285 has 24 divisors (see below), whose sum is σ = 458924544. Its totient is φ = 140796000.

The previous prime is 264378277. The next prime is 264378287. The reversal of 264378285 is 582873462.

It is not a de Polignac number, because 264378285 - 2³ = 264378277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 264378285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264378287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29884 + ... + 37706.

It is an arithmetic number, because the mean of its divisors is an integer number (19121856).

Almost surely, 2^264378285 is an apocalyptic number.

It is an amenable number.

264378285 is a deficient number, since it is larger than the sum of its proper divisors (194546259).

264378285 is a wasteful number, since it uses less digits than its factorization.

264378285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585 (or 8582 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 264378285 is about 16259.7135583626. The cubic root of 264378285 is about 641.8131243435.

The spelling of 264378285 in words is "two hundred sixty-four million, three hundred seventy-eight thousand, two hundred eighty-five".