220622440 has 32 divisors (see below), whose sum is σ = 517985280. Its totient is φ = 84411712.

The previous prime is 220622429. The next prime is 220622477. The reversal of 220622440 is 44226022.

220622440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220622440² = 97348522063107200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118984 + ... + 120823.

It is an arithmetic number, because the mean of its divisors is an integer number (16187040).

Almost surely, 2^220622440 is an apocalyptic number.

220622440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220622440 is an abundant number, since it is smaller than the sum of its proper divisors (297362840).

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

220622440 is a wasteful number, since it uses less digits than its factorization.

220622440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239841 (or 239837 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 220622440 is about 14853.3646020018. The cubic root of 220622440 is about 604.2498637284.

Adding to 220622440 its reverse (44226022), we get a palindrome (264848462).

The spelling of 220622440 in words is "two hundred twenty million, six hundred twenty-two thousand, four hundred forty".