816380284 has 48 divisors (see below), whose sum is σ = 1512531328. Its totient is φ = 385051968.

The previous prime is 816380269. The next prime is 816380291. The reversal of 816380284 is 482083618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036939 + ... + 1037725.

Almost surely, 2^816380284 is an apocalyptic number.

It is an amenable number.

816380284 is a deficient number, since it is larger than the sum of its proper divisors (696151044).

816380284 is a wasteful number, since it uses less digits than its factorization.

816380284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 816380284 is about 28572.3692402293. The cubic root of 816380284 is about 934.6108874939.

The spelling of 816380284 in words is "eight hundred sixteen million, three hundred eighty thousand, two hundred eighty-four".