213220526 has 32 divisors (see below), whose sum is σ = 333849600. Its totient is φ = 102080160.

The previous prime is 213220519. The next prime is 213220549. The reversal of 213220526 is 625022312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930980 + ... + 931208.

It is an arithmetic number, because the mean of its divisors is an integer number (10432800).

Almost surely, 2^213220526 is an apocalyptic number.

213220526 is a deficient number, since it is larger than the sum of its proper divisors (120629074).

213220526 is a wasteful number, since it uses less digits than its factorization.

213220526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213220526 is about 14602.0726610985. The cubic root of 213220526 is about 597.4152944469.

Adding to 213220526 its reverse (625022312), we get a palindrome (838242838).

The spelling of 213220526 in words is "two hundred thirteen million, two hundred twenty thousand, five hundred twenty-six".