262640540 has 24 divisors (see below), whose sum is σ = 551979792. Its totient is φ = 104973440.

The previous prime is 262640537. The next prime is 262640549. The reversal of 262640540 is 45046262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262640549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25187 + ... + 34053.

It is an arithmetic number, because the mean of its divisors is an integer number (22999158).

Almost surely, 2^262640540 is an apocalyptic number.

262640540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

262640540 is an abundant number, since it is smaller than the sum of its proper divisors (289339252).

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

262640540 is a wasteful number, since it uses less digits than its factorization.

262640540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10357 (or 10355 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 262640540 is about 16206.1883242174. The cubic root of 262640540 is about 640.4038304219.

The spelling of 262640540 in words is "two hundred sixty-two million, six hundred forty thousand, five hundred forty".