81629096 has 32 divisors (see below), whose sum is σ = 156751200. Its totient is φ = 39839040.

The previous prime is 81629081. The next prime is 81629101. The reversal of 81629096 is 69092618.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76406 + ... + 77466.

It is an arithmetic number, because the mean of its divisors is an integer number (4898475).

Almost surely, 2^81629096 is an apocalyptic number.

It is an amenable number.

81629096 is a deficient number, since it is larger than the sum of its proper divisors (75122104).

81629096 is a wasteful number, since it uses less digits than its factorization.

81629096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 81629096 is about 9034.8821796413. The cubic root of 81629096 is about 433.7921236846.

The spelling of 81629096 in words is "eighty-one million, six hundred twenty-nine thousand, ninety-six".