81776034 has 32 divisors (see below), whose sum is σ = 183435840. Its totient is φ = 27002016.

The previous prime is 81776029. The next prime is 81776053. The reversal of 81776034 is 43067718.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 81776034.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1299 + ... + 12854.

It is an arithmetic number, because the mean of its divisors is an integer number (5732370).

Almost surely, 2^81776034 is an apocalyptic number.

81776034 is an abundant number, since it is smaller than the sum of its proper divisors (101659806).

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

81776034 is a wasteful number, since it uses less digits than its factorization.

81776034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271 (or 14265 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 81776034 is about 9043.0102289006. The cubic root of 81776034 is about 434.0522529057.

The spelling of 81776034 in words is "eighty-one million, seven hundred seventy-six thousand, thirty-four".