216824734 has 16 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 92710584.

The previous prime is 216824731. The next prime is 216824759. The reversal of 216824734 is 437428612.

It is a junction number, because it is equal to n+sod(n) for n = 216824693 and 216824702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216824731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11494 + ... + 23785.

It is an arithmetic number, because the mean of its divisors is an integer number (23284800).

Almost surely, 2^216824734 is an apocalyptic number.

216824734 is a deficient number, since it is larger than the sum of its proper divisors (155732066).

216824734 is a wasteful number, since it uses less digits than its factorization.

216824734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35727.

The product of its digits is 64512, while the sum is 37.

The square root of 216824734 is about 14724.9697453000. The cubic root of 216824734 is about 600.7626727323.

The spelling of 216824734 in words is "two hundred sixteen million, eight hundred twenty-four thousand, seven hundred thirty-four".