47217240 has 192 divisors, whose sum is σ = 180048960. Its totient is φ = 10506240.

The previous prime is 47217221. The next prime is 47217241. The reversal of 47217240 is 4271274.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47217241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103092 + ... + 103548.

It is an arithmetic number, because the mean of its divisors is an integer number (937755).

Almost surely, 2^47217240 is an apocalyptic number.

47217240 is a gapful number since it is divisible by the number (40) 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 47217240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90024480).

47217240 is an abundant number, since it is smaller than the sum of its proper divisors (132831720).

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

47217240 is a wasteful number, since it uses less digits than its factorization.

47217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 47217240 is about 6871.4801898863. The cubic root of 47217240 is about 361.4377687106.

The spelling of 47217240 in words is "forty-seven million, two hundred seventeen thousand, two hundred forty".