821233016 has 8 divisors (see below), whose sum is σ = 1539811920. Its totient is φ = 410616504.

The previous prime is 821232913. The next prime is 821233027. The reversal of 821233016 is 610332128.

It is a tau number, because it is divible by the number of its divisors (8).

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, 51327056 + ... + 51327071.

It is an arithmetic number, because the mean of its divisors is an integer number (192476490).

Almost surely, 2^821233016 is an apocalyptic number.

It is an amenable number.

821233016 is a deficient number, since it is larger than the sum of its proper divisors (718578904).

821233016 is a wasteful number, since it uses less digits than its factorization.

821233016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102654133 (or 102654129 counting only the distinct ones).

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

The square root of 821233016 is about 28657.1634325521. The cubic root of 821233016 is about 936.4590699842.

The spelling of 821233016 in words is "eight hundred twenty-one million, two hundred thirty-three thousand, sixteen".