262640020 has 12 divisors (see below), whose sum is σ = 551544084. Its totient is φ = 105056000.

The previous prime is 262640017. The next prime is 262640039. The reversal of 262640020 is 20046262.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84897796 + 177742224 = 9214^2 + 13332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 262639973 and 262640000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565981 + ... + 6566020.

It is an arithmetic number, because the mean of its divisors is an integer number (45962007).

Almost surely, 2^262640020 is an apocalyptic number.

262640020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

262640020 is an abundant number, since it is smaller than the sum of its proper divisors (288904064).

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

262640020 is a wasteful number, since it uses less digits than its factorization.

262640020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132010 (or 13132008 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 262640020 is about 16206.1722809552. The cubic root of 262640020 is about 640.4034077781.

Adding to 262640020 its reverse (20046262), we get a palindrome (282686282).

The spelling of 262640020 in words is "two hundred sixty-two million, six hundred forty thousand, twenty".