220332540 has 24 divisors (see below), whose sum is σ = 616931280. Its totient is φ = 58755328.

The previous prime is 220332527. The next prime is 220332577. The reversal of 220332540 is 45233022.

It is a congruent number.

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, 1836045 + ... + 1836164.

It is an arithmetic number, because the mean of its divisors is an integer number (25705470).

Almost surely, 2^220332540 is an apocalyptic number.

220332540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220332540 is an abundant number, since it is smaller than the sum of its proper divisors (396598740).

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

220332540 is a wasteful number, since it uses less digits than its factorization.

220332540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672221 (or 3672219 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 220332540 is about 14843.6026624267. The cubic root of 220332540 is about 603.9850843502.

Adding to 220332540 its reverse (45233022), we get a palindrome (265565562).

It can be divided in two parts, 2203 and 32540, that added together give a palindrome (34743).

The spelling of 220332540 in words is "two hundred twenty million, three hundred thirty-two thousand, five hundred forty".