264040205 has 32 divisors (see below), whose sum is σ = 381362688. Its totient is φ = 172915200.

The previous prime is 264040201. The next prime is 264040213. The reversal of 264040205 is 502040462.

264040205 = T₁₀₀ + T₁₀₁ + ... + T₁₁₆₅.

It is not a de Polignac number, because 264040205 - 2² = 264040201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264040201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24812 + ... + 33818.

It is an arithmetic number, because the mean of its divisors is an integer number (11917584).

Almost surely, 2^264040205 is an apocalyptic number.

It is an amenable number.

264040205 is a deficient number, since it is larger than the sum of its proper divisors (117322483).

264040205 is a wasteful number, since it uses less digits than its factorization.

264040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 264040205 is about 16249.3139855195. The cubic root of 264040205 is about 641.5394297294.

Adding to 264040205 its reverse (502040462), we get a palindrome (766080667).

It can be divided in two parts, 26404020 and 5, that multiplied together give a square (132020100 = 11490²).

The spelling of 264040205 in words is "two hundred sixty-four million, forty thousand, two hundred five".