47071656 has 48 divisors (see below), whose sum is σ = 128767860. Its totient is φ = 15532800.

The previous prime is 47071631. The next prime is 47071667. The reversal of 47071656 is 65617074.

It can be written as a sum of positive squares in 2 ways, for example, as 46376100 + 695556 = 6810^2 + 834^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 47071656.

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 11 ways as a sum of consecutive naturals, for example, 4036 + ... + 10508.

Almost surely, 2^47071656 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 47071656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64383930).

47071656 is an abundant number, since it is smaller than the sum of its proper divisors (81696204).

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

47071656 is a wasteful number, since it uses less digits than its factorization.

47071656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586 (or 6579 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 47071656 is about 6860.8786609297. The cubic root of 47071656 is about 361.0659149186.

The spelling of 47071656 in words is "forty-seven million, seventy-one thousand, six hundred fifty-six".