80021078 has 8 divisors (see below), whose sum is σ = 120078480. Its totient is φ = 39994920.

The previous prime is 80021077. The next prime is 80021083. The reversal of 80021078 is 87012008.

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 (80021077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (15009810).

Almost surely, 2^80021078 is an apocalyptic number.

80021078 is a deficient number, since it is larger than the sum of its proper divisors (40057402).

80021078 is a wasteful number, since it uses less digits than its factorization.

80021078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15622.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 80021078 is about 8945.4501284172. The cubic root of 80021078 is about 430.9247773287.

The spelling of 80021078 in words is "eighty million, twenty-one thousand, seventy-eight".