81926108 has 24 divisors (see below), whose sum is σ = 156933504. Its totient is φ = 37113200.

The previous prime is 81926101. The next prime is 81926113. The reversal of 81926108 is 80162918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81926101) 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, 10691 + ... + 16677.

It is an arithmetic number, because the mean of its divisors is an integer number (6538896).

Almost surely, 2^81926108 is an apocalyptic number.

It is an amenable number.

81926108 is a deficient number, since it is larger than the sum of its proper divisors (75007396).

81926108 is a wasteful number, since it uses less digits than its factorization.

81926108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313 (or 6311 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 81926108 is about 9051.3042154156. The cubic root of 81926108 is about 434.3176124382.

The spelling of 81926108 in words is "eighty-one million, nine hundred twenty-six thousand, one hundred eight".