47018388 has 24 divisors (see below), whose sum is σ = 115484320. Its totient is φ = 14847840.

The previous prime is 47018383. The next prime is 47018423. The reversal of 47018388 is 88381074.

47018388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47018383) 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 in 7 ways as a sum of consecutive naturals, for example, 102883 + ... + 103338.

Almost surely, 2^47018388 is an apocalyptic number.

It is an amenable number.

47018388 is an abundant number, since it is smaller than the sum of its proper divisors (68465932).

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

47018388 is a wasteful number, since it uses less digits than its factorization.

47018388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206247 (or 206245 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 47018388 is about 6856.9955519892. The cubic root of 47018388 is about 360.9296650648.

The spelling of 47018388 in words is "forty-seven million, eighteen thousand, three hundred eighty-eight".