220006542 has 16 divisors (see below), whose sum is σ = 502872192. Its totient is φ = 62859000.

The previous prime is 220006541. The next prime is 220006561. The reversal of 220006542 is 245600022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220006541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2619084 + ... + 2619167.

It is an arithmetic number, because the mean of its divisors is an integer number (31429512).

Almost surely, 2^220006542 is an apocalyptic number.

220006542 is an abundant number, since it is smaller than the sum of its proper divisors (282865650).

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

220006542 is a wasteful number, since it uses less digits than its factorization.

220006542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238263.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 220006542 is about 14832.6175033269. The cubic root of 220006542 is about 603.6870573804.

Adding to 220006542 its reverse (245600022), we get a palindrome (465606564).

The spelling of 220006542 in words is "two hundred twenty million, six thousand, five hundred forty-two".