47658138 has 16 divisors (see below), whose sum is σ = 103981536. Its totient is φ = 14441840.

The previous prime is 47658133. The next prime is 47658151. The reversal of 47658138 is 83185674.

It is a self number, because there is not a number n which added to its sum of digits gives 47658138.

It is not an unprimeable number, because it can be changed into a prime (47658131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360981 + ... + 361112.

It is an arithmetic number, because the mean of its divisors is an integer number (6498846).

Almost surely, 2^47658138 is an apocalyptic number.

47658138 is an abundant number, since it is smaller than the sum of its proper divisors (56323398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47658138 is a wasteful number, since it uses less digits than its factorization.

47658138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722109.

The product of its digits is 161280, while the sum is 42.

The square root of 47658138 is about 6903.4873795785. The cubic root of 47658138 is about 362.5592781379.

The spelling of 47658138 in words is "forty-seven million, six hundred fifty-eight thousand, one hundred thirty-eight".