80978002 has 32 divisors (see below), whose sum is σ = 141649920. Its totient is φ = 34004880.

The previous prime is 80977999. The next prime is 80978003. The reversal of 80978002 is 20087908.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80978003) 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 15 ways as a sum of consecutive naturals, for example, 233193 + ... + 233539.

It is an arithmetic number, because the mean of its divisors is an integer number (4426560).

Almost surely, 2^80978002 is an apocalyptic number.

80978002 is a deficient number, since it is larger than the sum of its proper divisors (60671918).

80978002 is a wasteful number, since it uses less digits than its factorization.

80978002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 80978002 is about 8998.7778059023. Note that the first 3 decimals coincide. The cubic root of 80978002 is about 432.6356988964.

The spelling of 80978002 in words is "eighty million, nine hundred seventy-eight thousand, two".