220262740 has 24 divisors (see below), whose sum is σ = 463429512. Its totient is φ = 87937920.

The previous prime is 220262729. The next prime is 220262741. The reversal of 220262740 is 47262022.

It can be written as a sum of positive squares in 4 ways, for example, as 20775364 + 199487376 = 4558^2 + 14124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220262741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 20998.

It is an arithmetic number, because the mean of its divisors is an integer number (19309563).

Almost surely, 2^220262740 is an apocalyptic number.

220262740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220262740 is an abundant number, since it is smaller than the sum of its proper divisors (243166772).

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

220262740 is a wasteful number, since it uses less digits than its factorization.

220262740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907 (or 20905 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 220262740 is about 14841.2512949549. The cubic root of 220262740 is about 603.9212980214.

The spelling of 220262740 in words is "two hundred twenty million, two hundred sixty-two thousand, seven hundred forty".