264740540 has 24 divisors (see below), whose sum is σ = 563788512. Its totient is φ = 104404160.

The previous prime is 264740537. The next prime is 264740543. The reversal of 264740540 is 45047462.

It is an interprime number because it is at equal distance from previous prime (264740537) and next prime (264740543).

It is a junction number, because it is equal to n+sod(n) for n = 264740497 and 264740506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264740543) 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 7 ways as a sum of consecutive naturals, for example, 91799 + ... + 94638.

It is an arithmetic number, because the mean of its divisors is an integer number (23491188).

Almost surely, 2^264740540 is an apocalyptic number.

264740540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264740540 is an abundant number, since it is smaller than the sum of its proper divisors (299047972).

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

264740540 is a wasteful number, since it uses less digits than its factorization.

264740540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186517 (or 186515 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 264740540 is about 16270.8493939315. The cubic root of 264740540 is about 642.1061311393.

The spelling of 264740540 in words is "two hundred sixty-four million, seven hundred forty thousand, five hundred forty".