81895362 has 16 divisors (see below), whose sum is σ = 169439040. Its totient is φ = 26357072.

The previous prime is 81895361. The next prime is 81895379. The reversal of 81895362 is 26359818.

It is a super-2 number, since 2×81895362² = 13413700634222088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (81895361) 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, 235158 + ... + 235505.

It is an arithmetic number, because the mean of its divisors is an integer number (10589940).

Almost surely, 2^81895362 is an apocalyptic number.

81895362 is an abundant number, since it is smaller than the sum of its proper divisors (87543678).

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

81895362 is a wasteful number, since it uses less digits than its factorization.

81895362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470697.

The product of its digits is 103680, while the sum is 42.

The square root of 81895362 is about 9049.6056267663. The cubic root of 81895362 is about 434.2632740412.

The spelling of 81895362 in words is "eighty-one million, eight hundred ninety-five thousand, three hundred sixty-two".