81036046 has 64 divisors (see below), whose sum is σ = 157925376. Its totient is φ = 30326400.

The previous prime is 81036041. The next prime is 81036047. The reversal of 81036046 is 64063018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81036041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298891 + ... + 299161.

It is an arithmetic number, because the mean of its divisors is an integer number (2467584).

Almost surely, 2^81036046 is an apocalyptic number.

81036046 is a deficient number, since it is larger than the sum of its proper divisors (76889330).

81036046 is a wasteful number, since it uses less digits than its factorization.

81036046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 81036046 is about 9002.0023328146. The cubic root of 81036046 is about 432.7390434604.

It can be divided in two parts, 810 and 36046, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 81036046 in words is "eighty-one million, thirty-six thousand, forty-six".