80871290 has 8 divisors (see below), whose sum is σ = 145568340. Its totient is φ = 32348512.

The previous prime is 80871283. The next prime is 80871293. The reversal of 80871290 is 9217808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80802121 + 69169 = 8989^2 + 263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80871290.

It is not an unprimeable number, because it can be changed into a prime (80871293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4043555 + ... + 4043574.

Almost surely, 2^80871290 is an apocalyptic number.

80871290 is a deficient number, since it is larger than the sum of its proper divisors (64697050).

80871290 is a wasteful number, since it uses less digits than its factorization.

80871290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8087136.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 80871290 is about 8992.8466016051. The cubic root of 80871290 is about 432.4455743602.

The spelling of 80871290 in words is "eighty million, eight hundred seventy-one thousand, two hundred ninety".