47133778 has 4 divisors (see below), whose sum is σ = 70700670. Its totient is φ = 23566888.

The previous prime is 47133773. The next prime is 47133781. The reversal of 47133778 is 87733174.

47133778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 30217009 + 16916769 = 5497^2 + 4113^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47133778.

It is not an unprimeable number, because it can be changed into a prime (47133773) by changing a digit.

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 as a sum of consecutive naturals, namely, 11783443 + ... + 11783446.

Almost surely, 2^47133778 is an apocalyptic number.

47133778 is a deficient number, since it is larger than the sum of its proper divisors (23566892).

47133778 is a wasteful number, since it uses less digits than its factorization.

47133778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23566891.

The product of its digits is 98784, while the sum is 40.

The square root of 47133778 is about 6865.4044309130. The cubic root of 47133778 is about 361.2246819180.

The spelling of 47133778 in words is "forty-seven million, one hundred thirty-three thousand, seven hundred seventy-eight".