213612416 has 16 divisors (see below), whose sum is σ = 425556240. Its totient is φ = 106806144.

The previous prime is 213612403. The next prime is 213612439. The reversal of 213612416 is 614216312.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834296 + ... + 834551.

It is an arithmetic number, because the mean of its divisors is an integer number (26597265).

Almost surely, 2^213612416 is an apocalyptic number.

It is an amenable number.

213612416 is a deficient number, since it is larger than the sum of its proper divisors (211943824).

213612416 is an equidigital number, since it uses as much as digits as its factorization.

213612416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668861 (or 1668849 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 213612416 is about 14615.4854862916. The cubic root of 213612416 is about 597.7810781664.

Adding to 213612416 its reverse (614216312), we get a palindrome (827828728).

The spelling of 213612416 in words is "two hundred thirteen million, six hundred twelve thousand, four hundred sixteen".