220620672 has 192 divisors, whose sum is σ = 678328560. Its totient is φ = 71331840.

The previous prime is 220620671. The next prime is 220620683. The reversal of 220620672 is 276026022.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220620671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275178 + ... + 1275350.

Almost surely, 2^220620672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220620672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339164280).

220620672 is an abundant number, since it is smaller than the sum of its proper divisors (457707888).

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

220620672 is an equidigital number, since it uses as much as digits as its factorization.

220620672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 220620672 is about 14853.3050867475. The cubic root of 220620672 is about 604.2482496336.

Adding to 220620672 its reverse (276026022), we get a palindrome (496646694).

The spelling of 220620672 in words is "two hundred twenty million, six hundred twenty thousand, six hundred seventy-two".