47221312 has 28 divisors (see below), whose sum is σ = 94219776. Its totient is φ = 23480960.

The previous prime is 47221303. The next prime is 47221333. The reversal of 47221312 is 21312274.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10293 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (3364992).

Almost surely, 2^47221312 is an apocalyptic number.

It is an amenable number.

47221312 is a deficient number, since it is larger than the sum of its proper divisors (46998464).

47221312 is a wasteful number, since it uses less digits than its factorization.

47221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4056 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 47221312 is about 6871.7764806489. The cubic root of 47221312 is about 361.4481585053.

Adding to 47221312 its reverse (21312274), we get a palindrome (68533586).

The spelling of 47221312 in words is "forty-seven million, two hundred twenty-one thousand, three hundred twelve".