80871850 has 12 divisors (see below), whose sum is σ = 150421734. Its totient is φ = 32348720.

The previous prime is 80871829. The next prime is 80871853. The reversal of 80871850 is 5817808.

It can be written as a sum of positive squares in 3 ways, for example, as 65918161 + 14953689 = 8119^2 + 3867^2 .

It is a super-2 number, since 2×80871850² = 13080512244845000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80871853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 808669 + ... + 808768.

Almost surely, 2^80871850 is an apocalyptic number.

80871850 is a deficient number, since it is larger than the sum of its proper divisors (69549884).

80871850 is a wasteful number, since it uses less digits than its factorization.

80871850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617449 (or 1617444 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 80871850 is about 8992.8777374098. The cubic root of 80871850 is about 432.4465725264.

The spelling of 80871850 in words is "eighty million, eight hundred seventy-one thousand, eight hundred fifty".