816487382 has 16 divisors (see below), whose sum is σ = 1238418720. Its totient is φ = 403706688.

The previous prime is 816487349. The next prime is 816487387. The reversal of 816487382 is 283784618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816487387) 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, 59594 + ... + 72002.

It is an arithmetic number, because the mean of its divisors is an integer number (77401170).

Almost surely, 2^816487382 is an apocalyptic number.

816487382 is a deficient number, since it is larger than the sum of its proper divisors (421931338).

816487382 is a wasteful number, since it uses less digits than its factorization.

816487382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775.

The product of its digits is 516096, while the sum is 47.

The square root of 816487382 is about 28574.2433320639. The cubic root of 816487382 is about 934.6517551230.

The spelling of 816487382 in words is "eight hundred sixteen million, four hundred eighty-seven thousand, three hundred eighty-two".