47447248 has 40 divisors (see below), whose sum is σ = 95697000. Its totient is φ = 22761984.

The previous prime is 47447227. The next prime is 47447249. The reversal of 47447248 is 84274474.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24522304 + 22924944 = 4952^2 + 4788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47447248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47447249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135778 + ... + 136126.

It is an arithmetic number, because the mean of its divisors is an integer number (2392425).

Almost surely, 2^47447248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47447248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47848500).

47447248 is an abundant number, since it is smaller than the sum of its proper divisors (48249752).

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

47447248 is a wasteful number, since it uses less digits than its factorization.

47447248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 673 counting only the distinct ones).

The product of its digits is 200704, while the sum is 40.

The square root of 47447248 is about 6888.1962805948. The cubic root of 47447248 is about 362.0237054977.

The spelling of 47447248 in words is "forty-seven million, four hundred forty-seven thousand, two hundred forty-eight".