213632140 has 24 divisors (see below), whose sum is σ = 459571392. Its totient is φ = 83368320.

The previous prime is 213632131. The next prime is 213632141. The reversal of 213632140 is 41236312.

213632140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213632141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129444 + ... + 131083.

It is an arithmetic number, because the mean of its divisors is an integer number (19148808).

Almost surely, 2^213632140 is an apocalyptic number.

213632140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213632140 is an abundant number, since it is smaller than the sum of its proper divisors (245939252).

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

213632140 is a wasteful number, since it uses less digits than its factorization.

213632140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260577 (or 260575 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 213632140 is about 14616.1602344802. The cubic root of 213632140 is about 597.7994763965.

Adding to 213632140 its reverse (41236312), we get a palindrome (254868452).

The spelling of 213632140 in words is "two hundred thirteen million, six hundred thirty-two thousand, one hundred forty".