220791740 has 36 divisors (see below), whose sum is σ = 502080264. Its totient is φ = 81521856.

The previous prime is 220791731. The next prime is 220791749. The reversal of 220791740 is 47197022.

It is an interprime number because it is at equal distance from previous prime (220791731) and next prime (220791749).

It is a junction number, because it is equal to n+sod(n) for n = 220791697 and 220791706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220791749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29282 + ... + 36041.

It is an arithmetic number, because the mean of its divisors is an integer number (13946674).

Almost surely, 2^220791740 is an apocalyptic number.

220791740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220791740 is an abundant number, since it is smaller than the sum of its proper divisors (281288524).

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

220791740 is a wasteful number, since it uses less digits than its factorization.

220791740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65358 (or 65343 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 220791740 is about 14859.0625545490. The cubic root of 220791740 is about 604.4043861571.

The spelling of 220791740 in words is "two hundred twenty million, seven hundred ninety-one thousand, seven hundred forty".