220868742 has 16 divisors (see below), whose sum is σ = 449225280. Its totient is φ = 72374952.

The previous prime is 220868741. The next prime is 220868759. The reversal of 220868742 is 247868022.

It is a self number, because there is not a number n which added to its sum of digits gives 220868742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220868741) 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, 311608 + ... + 312315.

It is an arithmetic number, because the mean of its divisors is an integer number (28076580).

Almost surely, 2^220868742 is an apocalyptic number.

220868742 is an abundant number, since it is smaller than the sum of its proper divisors (228356538).

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

220868742 is a wasteful number, since it uses less digits than its factorization.

220868742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623987.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 220868742 is about 14861.6534073433. The cubic root of 220868742 is about 604.4746408040.

The spelling of 220868742 in words is "two hundred twenty million, eight hundred sixty-eight thousand, seven hundred forty-two".