81029883 has 16 divisors (see below), whose sum is σ = 118728576. Its totient is φ = 48747840.

The previous prime is 81029869. The next prime is 81029909. The reversal of 81029883 is 38892018.

It is not a de Polignac number, because 81029883 - 2¹⁰ = 81028859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81029083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4441 + ... + 13482.

It is an arithmetic number, because the mean of its divisors is an integer number (7420536).

Almost surely, 2^81029883 is an apocalyptic number.

81029883 is a deficient number, since it is larger than the sum of its proper divisors (37698693).

81029883 is a wasteful number, since it uses less digits than its factorization.

81029883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18074.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 81029883 is about 9001.6600135753. The cubic root of 81029883 is about 432.7280728761.

The spelling of 81029883 in words is "eighty-one million, twenty-nine thousand, eight hundred eighty-three".