213296440 has 32 divisors (see below), whose sum is σ = 548477280. Its totient is φ = 73130112.

The previous prime is 213296407. The next prime is 213296441. The reversal of 213296440 is 44692312.

It is a happy number.

213296440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213296441) 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, 380607 + ... + 381166.

It is an arithmetic number, because the mean of its divisors is an integer number (17139915).

Almost surely, 2^213296440 is an apocalyptic number.

213296440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213296440 is an abundant number, since it is smaller than the sum of its proper divisors (335180840).

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

213296440 is a wasteful number, since it uses less digits than its factorization.

213296440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761791 (or 761787 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 213296440 is about 14604.6718552660. The cubic root of 213296440 is about 597.4861863137.

The spelling of 213296440 in words is "two hundred thirteen million, two hundred ninety-six thousand, four hundred forty".