816218200 has 48 divisors (see below), whose sum is σ = 2168812080. Its totient is φ = 279845760.

The previous prime is 816218191. The next prime is 816218203. The reversal of 816218200 is 2812618.

It is a super-2 number, since 2×816218200² = 1332424300022480000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816218203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290107 + ... + 292906.

It is an arithmetic number, because the mean of its divisors is an integer number (45183585).

Almost surely, 2^816218200 is an apocalyptic number.

It is an amenable number.

816218200 is an abundant number, since it is smaller than the sum of its proper divisors (1352593880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816218200 is a wasteful number, since it uses less digits than its factorization.

816218200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583036 (or 583027 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 816218200 is about 28569.5327228151. The cubic root of 816218200 is about 934.5490309055.

It can be divided in two parts, 8162 and 18200, that added together give a palindrome (26362).

The spelling of 816218200 in words is "eight hundred sixteen million, two hundred eighteen thousand, two hundred".