220734774 has 64 divisors (see below), whose sum is σ = 534340800. Its totient is φ = 67136256.

The previous prime is 220734743. The next prime is 220734791. The reversal of 220734774 is 477437022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60712 + ... + 64244.

It is an arithmetic number, because the mean of its divisors is an integer number (8349075).

Almost surely, 2^220734774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220734774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267170400).

220734774 is an abundant number, since it is smaller than the sum of its proper divisors (313606026).

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

220734774 is a wasteful number, since it uses less digits than its factorization.

220734774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The square root of 220734774 is about 14857.1455535712. The cubic root of 220734774 is about 604.3524013292.

The spelling of 220734774 in words is "two hundred twenty million, seven hundred thirty-four thousand, seven hundred seventy-four".