80129356 has 24 divisors (see below), whose sum is σ = 143334576. Its totient is φ = 39184320.

The previous prime is 80129341. The next prime is 80129363. The reversal of 80129356 is 65392108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47235 + ... + 48901.

It is an arithmetic number, because the mean of its divisors is an integer number (5972274).

Almost surely, 2^80129356 is an apocalyptic number.

It is an amenable number.

80129356 is a deficient number, since it is larger than the sum of its proper divisors (63205220).

80129356 is a wasteful number, since it uses less digits than its factorization.

80129356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 80129356 is about 8951.5002094621. The cubic root of 80129356 is about 431.1190538229.

The spelling of 80129356 in words is "eighty million, one hundred twenty-nine thousand, three hundred fifty-six".