81410734 has 4 divisors (see below), whose sum is σ = 122116104. Its totient is φ = 40705366.

The previous prime is 81410729. The next prime is 81410753. The reversal of 81410734 is 43701418.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×81410734² = 13255415220837512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20352682 + ... + 20352685.

It is an arithmetic number, because the mean of its divisors is an integer number (30529026).

Almost surely, 2^81410734 is an apocalyptic number.

81410734 is a deficient number, since it is larger than the sum of its proper divisors (40705370).

81410734 is a wasteful number, since it uses less digits than its factorization.

81410734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40705369.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 81410734 is about 9022.7897016388. The cubic root of 81410734 is about 433.4049729026.

The spelling of 81410734 in words is "eighty-one million, four hundred ten thousand, seven hundred thirty-four".