210220140 has 48 divisors (see below), whose sum is σ = 633896928. Its totient is φ = 51746304.

The previous prime is 210220111. The next prime is 210220151. The reversal of 210220140 is 41022012.

210220140 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 (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133977 + ... + 135536.

It is an arithmetic number, because the mean of its divisors is an integer number (13206186).

Almost surely, 2^210220140 is an apocalyptic number.

210220140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210220140 is an abundant number, since it is smaller than the sum of its proper divisors (423676788).

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

210220140 is a wasteful number, since it uses less digits than its factorization.

210220140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269538 (or 269536 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 210220140 is about 14498.9703082667. The cubic root of 210220140 is about 594.5998203587.

Adding to 210220140 its reverse (41022012), we get a palindrome (251242152).

The spelling of 210220140 in words is "two hundred ten million, two hundred twenty thousand, one hundred forty".