216741628 has 12 divisors (see below), whose sum is σ = 387368352. Its totient is φ = 106064960.

The previous prime is 216741593. The next prime is 216741649. The reversal of 216741628 is 826147612.

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, 576253 + ... + 576628.

It is an arithmetic number, because the mean of its divisors is an integer number (32280696).

Almost surely, 2^216741628 is an apocalyptic number.

It is an amenable number.

216741628 is a deficient number, since it is larger than the sum of its proper divisors (170626724).

216741628 is a wasteful number, since it uses less digits than its factorization.

216741628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152932 (or 1152930 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 216741628 is about 14722.1475335632. The cubic root of 216741628 is about 600.6859081771.

The spelling of 216741628 in words is "two hundred sixteen million, seven hundred forty-one thousand, six hundred twenty-eight".