81826029 has 12 divisors (see below), whose sum is σ = 118275456. Its totient is φ = 54512712.

The previous prime is 81826021. The next prime is 81826057. The reversal of 81826029 is 92062818.

It is not a de Polignac number, because 81826029 - 2³ = 81826021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81825984 and 81826002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81826021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17764 + ... + 21890.

It is an arithmetic number, because the mean of its divisors is an integer number (9856288).

Almost surely, 2^81826029 is an apocalyptic number.

It is an amenable number.

81826029 is a deficient number, since it is larger than the sum of its proper divisors (36449427).

81826029 is a wasteful number, since it uses less digits than its factorization.

81826029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 81826029 is about 9045.7740962286. The cubic root of 81826029 is about 434.1406896621.

The spelling of 81826029 in words is "eighty-one million, eight hundred twenty-six thousand, twenty-nine".