81084038 has 8 divisors (see below), whose sum is σ = 139001232. Its totient is φ = 34750296.

The previous prime is 81084037. The next prime is 81084053. The reversal of 81084038 is 83048018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 81083995 and 81084013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81084037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895845 + ... + 2895872.

It is an arithmetic number, because the mean of its divisors is an integer number (17375154).

Almost surely, 2^81084038 is an apocalyptic number.

81084038 is a deficient number, since it is larger than the sum of its proper divisors (57917194).

81084038 is a wasteful number, since it uses less digits than its factorization.

81084038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791726.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 81084038 is about 9004.6675674341. The cubic root of 81084038 is about 432.8244536564.

It can be divided in two parts, 810 and 84038, that added together give a palindrome (84848).

The spelling of 81084038 in words is "eighty-one million, eighty-four thousand, thirty-eight".