47302018 has 4 divisors (see below), whose sum is σ = 70953030. Its totient is φ = 23651008.

The previous prime is 47302009. The next prime is 47302019. The reversal of 47302018 is 81020374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29888089 + 17413929 = 5467^2 + 4173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47301983 and 47302001.

It is not an unprimeable number, because it can be changed into a prime (47302019) 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 as a sum of consecutive naturals, namely, 11825503 + ... + 11825506.

Almost surely, 2^47302018 is an apocalyptic number.

47302018 is a deficient number, since it is larger than the sum of its proper divisors (23651012).

47302018 is a wasteful number, since it uses less digits than its factorization.

47302018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23651011.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 47302018 is about 6877.6462543518. The cubic root of 47302018 is about 361.6539584634.

The spelling of 47302018 in words is "forty-seven million, three hundred two thousand, eighteen".