264220115 has 4 divisors (see below), whose sum is σ = 317064144. Its totient is φ = 211376088.

The previous prime is 264220111. The next prime is 264220133. The reversal of 264220115 is 511022462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264220115 - 2² = 264220111 is a prime.

It is a super-2 number, since 2×264220115² = 139624538341226450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264220111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26422007 + ... + 26422016.

It is an arithmetic number, because the mean of its divisors is an integer number (79266036).

Almost surely, 2^264220115 is an apocalyptic number.

264220115 is a deficient number, since it is larger than the sum of its proper divisors (52844029).

264220115 is an equidigital number, since it uses as much as digits as its factorization.

264220115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52844028.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 264220115 is about 16254.8489688462. The cubic root of 264220115 is about 641.6851059711.

Adding to 264220115 its reverse (511022462), we get a palindrome (775242577).

The spelling of 264220115 in words is "two hundred sixty-four million, two hundred twenty thousand, one hundred fifteen".