264543380 has 24 divisors (see below), whose sum is σ = 556363080. Its totient is φ = 105660800.

The previous prime is 264543379. The next prime is 264543407. The reversal of 264543380 is 83345462.

264543380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 147816964 + 116726416 = 12158^2 + 10804^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 264543380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4586 + ... + 23454.

It is an arithmetic number, because the mean of its divisors is an integer number (23181795).

Almost surely, 2^264543380 is an apocalyptic number.

264543380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264543380 is an abundant number, since it is smaller than the sum of its proper divisors (291819700).

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

264543380 is a wasteful number, since it uses less digits than its factorization.

264543380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19579 (or 19577 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 264543380 is about 16264.7895774892. The cubic root of 264543380 is about 641.9466931668.

The spelling of 264543380 in words is "two hundred sixty-four million, five hundred forty-three thousand, three hundred eighty".