220531950 has 192 divisors, whose sum is σ = 648172800. Its totient is φ = 55036800.

The previous prime is 220531933. The next prime is 220531963. The reversal of 220531950 is 59135022.

220531950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1683385 + ... + 1683515.

It is an arithmetic number, because the mean of its divisors is an integer number (3375900).

Almost surely, 2^220531950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220531950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324086400).

220531950 is an abundant number, since it is smaller than the sum of its proper divisors (427640850).

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

220531950 is a wasteful number, since it uses less digits than its factorization.

220531950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 220531950 is about 14850.3181784095. The cubic root of 220531950 is about 604.1672398462.

Adding to 220531950 its reverse (59135022), we get a palindrome (279666972).

The spelling of 220531950 in words is "two hundred twenty million, five hundred thirty-one thousand, nine hundred fifty".