81434108 has 12 divisors (see below), whose sum is σ = 162868272. Its totient is φ = 34900320.

The previous prime is 81434107. The next prime is 81434113. The reversal of 81434108 is 80143418.

81434108 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81434107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454153 + ... + 1454208.

It is an arithmetic number, because the mean of its divisors is an integer number (13572356).

Almost surely, 2^81434108 is an apocalyptic number.

It is an amenable number.

81434108 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81434108 is a wasteful number, since it uses less digits than its factorization.

81434108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908372 (or 2908370 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 81434108 is about 9024.0848843525. The cubic root of 81434108 is about 433.4464475255.

It can be divided in two parts, 8143410 and 8, that added together give a palindrome (8143418).

The spelling of 81434108 in words is "eighty-one million, four hundred thirty-four thousand, one hundred eight".