264440260 has 72 divisors (see below), whose sum is σ = 650631744. Its totient is φ = 90014400.

The previous prime is 264440251. The next prime is 264440263. The reversal of 264440260 is 62044462.

It is a super-2 number, since 2×264440260² = 139857302217735200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (264440263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147087 + ... + 148873.

It is an arithmetic number, because the mean of its divisors is an integer number (9036552).

Almost surely, 2^264440260 is an apocalyptic number.

264440260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264440260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325315872).

264440260 is an abundant number, since it is smaller than the sum of its proper divisors (386191484).

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

264440260 is a wasteful number, since it uses less digits than its factorization.

264440260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1952 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 264440260 is about 16261.6192305686. The cubic root of 264440260 is about 641.8632712516.

It can be divided in two parts, 2644402 and 60, that added together give a palindrome (2644462).

The spelling of 264440260 in words is "two hundred sixty-four million, four hundred forty thousand, two hundred sixty".