47218612 has 24 divisors (see below), whose sum is σ = 97695360. Its totient is φ = 19538400.

The previous prime is 47218607. The next prime is 47218631. The reversal of 47218612 is 21681274.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28264 + ... + 29887.

It is an arithmetic number, because the mean of its divisors is an integer number (4070640).

Almost surely, 2^47218612 is an apocalyptic number.

It is an amenable number.

47218612 is an abundant number, since it is smaller than the sum of its proper divisors (50476748).

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

47218612 is a wasteful number, since it uses less digits than its factorization.

47218612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58191 (or 58189 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 47218612 is about 6871.5800220910. The cubic root of 47218612 is about 361.4412694646.

Adding to 47218612 its reverse (21681274), we get a palindrome (68899886).

The spelling of 47218612 in words is "forty-seven million, two hundred eighteen thousand, six hundred twelve".