216674452 has 12 divisors (see below), whose sum is σ = 401485140. Its totient is φ = 101964416.

The previous prime is 216674443. The next prime is 216674483. The reversal of 216674452 is 254476612.

It can be written as a sum of positive squares in 2 ways, for example, as 99082116 + 117592336 = 9954^2 + 10844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593127 + ... + 1593262.

It is an arithmetic number, because the mean of its divisors is an integer number (33457095).

Almost surely, 2^216674452 is an apocalyptic number.

It is an amenable number.

216674452 is a deficient number, since it is larger than the sum of its proper divisors (184810688).

216674452 is a wasteful number, since it uses less digits than its factorization.

216674452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186410 (or 3186408 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 216674452 is about 14719.8658961283. The cubic root of 216674452 is about 600.6238437328.

The spelling of 216674452 in words is "two hundred sixteen million, six hundred seventy-four thousand, four hundred fifty-two".