213440044 has 24 divisors (see below), whose sum is σ = 376881120. Its totient is φ = 105764736.

The previous prime is 213440033. The next prime is 213440057. The reversal of 213440044 is 440044312.

213440044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213439997 and 213440024.

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, 345624 + ... + 346240.

It is an arithmetic number, because the mean of its divisors is an integer number (15703380).

Almost surely, 2^213440044 is an apocalyptic number.

It is an amenable number.

213440044 is a deficient number, since it is larger than the sum of its proper divisors (163441076).

213440044 is a wasteful number, since it uses less digits than its factorization.

213440044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 213440044 is about 14609.5874000603. The cubic root of 213440044 is about 597.6202441191.

Adding to 213440044 its reverse (440044312), we get a palindrome (653484356).

The spelling of 213440044 in words is "two hundred thirteen million, four hundred forty thousand, forty-four".