220278768 has 20 divisors (see below), whose sum is σ = 569053608. Its totient is φ = 73426240.

The previous prime is 220278767. The next prime is 220278823. The reversal of 220278768 is 867872022.

220278768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220278767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294523 + ... + 2294618.

Almost surely, 2^220278768 is an apocalyptic number.

It is an amenable number.

220278768 is an abundant number, since it is smaller than the sum of its proper divisors (348774840).

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

220278768 is a wasteful number, since it uses less digits than its factorization.

220278768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589152 (or 4589146 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 220278768 is about 14841.7912665554. The cubic root of 220278768 is about 603.9359463089.

The spelling of 220278768 in words is "two hundred twenty million, two hundred seventy-eight thousand, seven hundred sixty-eight".