80281616 has 20 divisors (see below), whose sum is σ = 164695932. Its totient is φ = 37779456.

The previous prime is 80281613. The next prime is 80281627. The reversal of 80281616 is 61618208.

It can be written as a sum of positive squares in 2 ways, for example, as 62473216 + 17808400 = 7904^2 + 4220^2 .

It is not an unprimeable number, because it can be changed into a prime (80281613) 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, 147305 + ... + 147848.

Almost surely, 2^80281616 is an apocalyptic number.

It is an amenable number.

80281616 is an abundant number, since it is smaller than the sum of its proper divisors (84414316).

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

80281616 is a wasteful number, since it uses less digits than its factorization.

80281616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295178 (or 295172 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 80281616 is about 8960.0008928571. Note that the first 3 decimals coincide. The cubic root of 80281616 is about 431.3919486227.

It can be divided in two parts, 802816 and 16, that multiplied together give a square (12845056 = 3584²).

The spelling of 80281616 in words is "eighty million, two hundred eighty-one thousand, six hundred sixteen".