47978248 has 16 divisors (see below), whose sum is σ = 90355500. Its totient is φ = 23883456.

The previous prime is 47978243. The next prime is 47978251. The reversal of 47978248 is 84287974.

It can be written as a sum of positive squares in 2 ways, for example, as 39463524 + 8514724 = 6282^2 + 2918^2 .

It is a super-2 number, since 2×47978248² = 4603824562299008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47978243) 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, 11263 + ... + 14926.

Almost surely, 2^47978248 is an apocalyptic number.

It is an amenable number.

47978248 is a deficient number, since it is larger than the sum of its proper divisors (42377252).

47978248 is a wasteful number, since it uses less digits than its factorization.

47978248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26424 (or 26420 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 47978248 is about 6926.6332370063. The cubic root of 47978248 is about 363.3692130397.

The spelling of 47978248 in words is "forty-seven million, nine hundred seventy-eight thousand, two hundred forty-eight".