81852204 has 24 divisors (see below), whose sum is σ = 218272768. Its totient is φ = 23386320.

The previous prime is 81852167. The next prime is 81852223. The reversal of 81852204 is 40225818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487132 + ... + 487299.

Almost surely, 2^81852204 is an apocalyptic number.

81852204 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

81852204 is an abundant number, since it is smaller than the sum of its proper divisors (136420564).

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

81852204 is a wasteful number, since it uses less digits than its factorization.

81852204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974445 (or 974443 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 81852204 is about 9047.2207887284. The cubic root of 81852204 is about 434.1869765678.

The spelling of 81852204 in words is "eighty-one million, eight hundred fifty-two thousand, two hundred four".