50728306 has 8 divisors (see below), whose sum is σ = 80568540. Its totient is φ = 23872128.

The previous prime is 50728303. The next prime is 50728319. The reversal of 50728306 is 60382705.

It can be written as a sum of positive squares in 2 ways, for example, as 48930025 + 1798281 = 6995^2 + 1341^2 .

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

It is a super-2 number, since 2×50728306² = 5146722059259272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50728303) 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 3 ways as a sum of consecutive naturals, for example, 745971 + ... + 746038.

Almost surely, 2^50728306 is an apocalyptic number.

50728306 is a deficient number, since it is larger than the sum of its proper divisors (29840234).

50728306 is a wasteful number, since it uses less digits than its factorization.

50728306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492028.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 50728306 is about 7122.3806413305. The cubic root of 50728306 is about 370.1832693245.

The spelling of 50728306 in words is "fifty million, seven hundred twenty-eight thousand, three hundred six".