220601394 has 120 divisors (see below), whose sum is σ = 555106860. Its totient is φ = 65085120.

The previous prime is 220601351. The next prime is 220601411. The reversal of 220601394 is 493106022.

220601394 is a `hidden beast` number, since 2 + 20 + 601 + 39 + 4 = 666.

220601394 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 218655369 + 1946025 = 14787^2 + 1395^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2023812 + ... + 2023920.

Almost surely, 2^220601394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220601394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277553430).

220601394 is an abundant number, since it is smaller than the sum of its proper divisors (334505466).

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

220601394 is a wasteful number, since it uses less digits than its factorization.

220601394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 220601394 is about 14852.6561260941. The cubic root of 220601394 is about 604.2306492323.

The spelling of 220601394 in words is "two hundred twenty million, six hundred one thousand, three hundred ninety-four".