220520140 has 24 divisors (see below), whose sum is σ = 474388992. Its totient is φ = 86056320.

The previous prime is 220520129. The next prime is 220520191. The reversal of 220520140 is 41025022.

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, 133644 + ... + 135283.

It is an arithmetic number, because the mean of its divisors is an integer number (19766208).

Almost surely, 2^220520140 is an apocalyptic number.

220520140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220520140 is an abundant number, since it is smaller than the sum of its proper divisors (253868852).

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

220520140 is a wasteful number, since it uses less digits than its factorization.

220520140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268977 (or 268975 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 220520140 is about 14849.9205385079. The cubic root of 220520140 is about 604.1564547990.

Adding to 220520140 its reverse (41025022), we get a palindrome (261545162).

The spelling of 220520140 in words is "two hundred twenty million, five hundred twenty thousand, one hundred forty".