47071388 has 48 divisors (see below), whose sum is σ = 102594240. Its totient is φ = 18399744.

The previous prime is 47071373. The next prime is 47071391. The reversal of 47071388 is 88317074.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 31670 + ... + 33122.

It is an arithmetic number, because the mean of its divisors is an integer number (2137380).

Almost surely, 2^47071388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47071388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51297120).

47071388 is an abundant number, since it is smaller than the sum of its proper divisors (55522852).

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

47071388 is a wasteful number, since it uses less digits than its factorization.

47071388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 47071388 is about 6860.8591298758. The cubic root of 47071388 is about 361.0652296807.

The spelling of 47071388 in words is "forty-seven million, seventy-one thousand, three hundred eighty-eight".