80361800 has 24 divisors (see below), whose sum is σ = 186841650. Its totient is φ = 32144640.

The previous prime is 80361779. The next prime is 80361803. The reversal of 80361800 is 816308.

It can be written as a sum of positive squares in 3 ways, for example, as 52504516 + 27857284 = 7246^2 + 5278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80361800.

It is not an unprimeable number, because it can be changed into a prime (80361803) 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 5 ways as a sum of consecutive naturals, for example, 200705 + ... + 201104.

Almost surely, 2^80361800 is an apocalyptic number.

It is an amenable number.

80361800 is an abundant number, since it is smaller than the sum of its proper divisors (106479850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80361800 is a wasteful number, since it uses less digits than its factorization.

80361800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401825 (or 401816 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 80361800 is about 8964.4743292621. The cubic root of 80361800 is about 431.5355233035.

The spelling of 80361800 in words is "eighty million, three hundred sixty-one thousand, eight hundred".