80533730 has 8 divisors (see below), whose sum is σ = 144960732. Its totient is φ = 32213488.

The previous prime is 80533727. The next prime is 80533751. The reversal of 80533730 is 3733508.

It can be written as a sum of positive squares in 2 ways, for example, as 74978281 + 5555449 = 8659^2 + 2357^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80533693 and 80533702.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4026677 + ... + 4026696.

Almost surely, 2^80533730 is an apocalyptic number.

80533730 is a deficient number, since it is larger than the sum of its proper divisors (64427002).

80533730 is a wasteful number, since it uses less digits than its factorization.

80533730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053380.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 80533730 is about 8974.0587250140. The cubic root of 80533730 is about 431.8430535561.

The spelling of 80533730 in words is "eighty million, five hundred thirty-three thousand, seven hundred thirty".