47211864 has 32 divisors (see below), whose sum is σ = 134891520. Its totient is φ = 13489056.

The previous prime is 47211863. The next prime is 47211911. The reversal of 47211864 is 46811274.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47211863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 140344 + ... + 140679.

It is an arithmetic number, because the mean of its divisors is an integer number (4215360).

Almost surely, 2^47211864 is an apocalyptic number.

It is an amenable number.

47211864 is an abundant number, since it is smaller than the sum of its proper divisors (87679656).

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

47211864 is a wasteful number, since it uses less digits than its factorization.

47211864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281039 (or 281035 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 47211864 is about 6871.0889966584. The cubic root of 47211864 is about 361.4240508173.

The spelling of 47211864 in words is "forty-seven million, two hundred eleven thousand, eight hundred sixty-four".