81030038 has 8 divisors (see below), whose sum is σ = 121591800. Its totient is φ = 40499440.

The previous prime is 81030023. The next prime is 81030097. The reversal of 81030038 is 83003018.

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

It is a junction number, because it is equal to n+sod(n) for n = 81029995 and 81030022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (15198975).

Almost surely, 2^81030038 is an apocalyptic number.

81030038 is a deficient number, since it is larger than the sum of its proper divisors (40561762).

81030038 is a wasteful number, since it uses less digits than its factorization.

81030038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15582.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 81030038 is about 9001.6686230943. The cubic root of 81030038 is about 432.7283487941.

The spelling of 81030038 in words is "eighty-one million, thirty thousand, thirty-eight".