47012805 has 120 divisors (see below), whose sum is σ = 103289472. Its totient is φ = 20357568.

The previous prime is 47012789. The next prime is 47012807. The reversal of 47012805 is 50821074.

It is not a de Polignac number, because 47012805 - 2⁴ = 47012789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47012807) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 456384 + ... + 456486.

Almost surely, 2^47012805 is an apocalyptic number.

47012805 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47012805 is an abundant number, since it is smaller than the sum of its proper divisors (56276667).

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

47012805 is a wasteful number, since it uses less digits than its factorization.

47012805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 47012805 is about 6856.5884374082. The cubic root of 47012805 is about 360.9153788096.

Adding to 47012805 its reverse (50821074), we get a palindrome (97833879).

The spelling of 47012805 in words is "forty-seven million, twelve thousand, eight hundred five".