80817742 has 8 divisors (see below), whose sum is σ = 122359896. Its totient is φ = 40031112.

The previous prime is 80817727. The next prime is 80817743. The reversal of 80817742 is 24771808.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80817743) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 188613 + ... + 189040.

It is an arithmetic number, because the mean of its divisors is an integer number (15294987).

Almost surely, 2^80817742 is an apocalyptic number.

80817742 is a deficient number, since it is larger than the sum of its proper divisors (41542154).

80817742 is a wasteful number, since it uses less digits than its factorization.

80817742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377762.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 80817742 is about 8989.8688533259. The cubic root of 80817742 is about 432.3501069888.

The spelling of 80817742 in words is "eighty million, eight hundred seventeen thousand, seven hundred forty-two".