47213712 has 160 divisors (see below), whose sum is σ = 166933760. Its totient is φ = 12441600.

The previous prime is 47213707. The next prime is 47213731. The reversal of 47213712 is 21731274.

It is a happy number.

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38712 + ... + 39912.

It is an arithmetic number, because the mean of its divisors is an integer number (1043336).

Almost surely, 2^47213712 is an apocalyptic number.

47213712 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47213712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83466880).

47213712 is an abundant number, since it is smaller than the sum of its proper divisors (119720048).

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

47213712 is a wasteful number, since it uses less digits than its factorization.

47213712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1226 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 47213712 is about 6871.2234718426. The cubic root of 47213712 is about 361.4287664606.

Adding to 47213712 its reverse (21731274), we get a palindrome (68944986).

The spelling of 47213712 in words is "forty-seven million, two hundred thirteen thousand, seven hundred twelve".