220740740 has 24 divisors (see below), whose sum is σ = 505697472. Its totient is φ = 80269280.

The previous prime is 220740719. The next prime is 220740743. The reversal of 220740740 is 47047022.

220740740 is a modest number, since divided by 740740 gives 220 as remainder.

It is not an unprimeable number, because it can be changed into a prime (220740743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501464 + ... + 501903.

It is an arithmetic number, because the mean of its divisors is an integer number (21070728).

Almost surely, 2^220740740 is an apocalyptic number.

220740740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220740740 is an abundant number, since it is smaller than the sum of its proper divisors (284956732).

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

220740740 is a wasteful number, since it uses less digits than its factorization.

220740740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003387 (or 1003385 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 220740740 is about 14857.3463310243. The cubic root of 220740740 is about 604.3578460746.

Adding to 220740740 its reverse (47047022), we get a palindrome (267787762).

The spelling of 220740740 in words is "two hundred twenty million, seven hundred forty thousand, seven hundred forty".