47485138 has 16 divisors (see below), whose sum is σ = 72826776. Its totient is φ = 23212800.

The previous prime is 47485129. The next prime is 47485153. The reversal of 47485138 is 83158474.

It can be written as a sum of positive squares in 4 ways, for example, as 31058329 + 16426809 = 5573^2 + 4053^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47485138.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38938 + ... + 40138.

Almost surely, 2^47485138 is an apocalyptic number.

47485138 is a deficient number, since it is larger than the sum of its proper divisors (25341638).

47485138 is a wasteful number, since it uses less digits than its factorization.

47485138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629.

The product of its digits is 107520, while the sum is 40.

The square root of 47485138 is about 6890.9460888908. The cubic root of 47485138 is about 362.1200470773.

The spelling of 47485138 in words is "forty-seven million, four hundred eighty-five thousand, one hundred thirty-eight".