80947802 has 16 divisors (see below), whose sum is σ = 132556200. Its totient is φ = 36847872.

The previous prime is 80947799. The next prime is 80947807. The reversal of 80947802 is 20874908.

It can be written as a sum of positive squares in 4 ways, for example, as 62552281 + 18395521 = 7909^2 + 4289^2 .

It is not an unprimeable number, because it can be changed into a prime (80947807) 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 7 ways as a sum of consecutive naturals, for example, 19427 + ... + 23222.

Almost surely, 2^80947802 is an apocalyptic number.

80947802 is a deficient number, since it is larger than the sum of its proper divisors (51608398).

80947802 is a wasteful number, since it uses less digits than its factorization.

80947802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42737.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 80947802 is about 8997.0996437741. The cubic root of 80947802 is about 432.5819097094.

The spelling of 80947802 in words is "eighty million, nine hundred forty-seven thousand, eight hundred two".