81934302 has 16 divisors (see below), whose sum is σ = 169155072. Its totient is φ = 26430360.

The previous prime is 81934283. The next prime is 81934313. The reversal of 81934302 is 20343918.

It is a self number, because there is not a number n which added to its sum of digits gives 81934302.

It is a congruent number.

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, 220068 + ... + 220439.

It is an arithmetic number, because the mean of its divisors is an integer number (10572192).

Almost surely, 2^81934302 is an apocalyptic number.

81934302 is an abundant number, since it is smaller than the sum of its proper divisors (87220770).

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

81934302 is a wasteful number, since it uses less digits than its factorization.

81934302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440543.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 81934302 is about 9051.7568460493. The cubic root of 81934302 is about 434.3320916641.

The spelling of 81934302 in words is "eighty-one million, nine hundred thirty-four thousand, three hundred two".