220551430 has 32 divisors (see below), whose sum is σ = 455880960. Its totient is φ = 75978720.

The previous prime is 220551379. The next prime is 220551431. The reversal of 220551430 is 34155022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220551431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50674 + ... + 54853.

It is an arithmetic number, because the mean of its divisors is an integer number (14246280).

Almost surely, 2^220551430 is an apocalyptic number.

220551430 is an abundant number, since it is smaller than the sum of its proper divisors (235329530).

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

220551430 is a wasteful number, since it uses less digits than its factorization.

220551430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105564.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 220551430 is about 14850.9740421294. The cubic root of 220551430 is about 604.1850283969.

It can be divided in two parts, 2205 and 51430, that added together give a palindrome (53635).

The spelling of 220551430 in words is "two hundred twenty million, five hundred fifty-one thousand, four hundred thirty".