47243380 has 48 divisors (see below), whose sum is σ = 106896384. Its totient is φ = 17487360.

The previous prime is 47243377. The next prime is 47243381. The reversal of 47243380 is 8334274.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47243381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12604 + ... + 15916.

It is an arithmetic number, because the mean of its divisors is an integer number (2227008).

Almost surely, 2^47243380 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 47243380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53448192).

47243380 is an abundant number, since it is smaller than the sum of its proper divisors (59653004).

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

47243380 is a wasteful number, since it uses less digits than its factorization.

47243380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 47243380 is about 6873.3819914217. The cubic root of 47243380 is about 361.5044550898.

The spelling of 47243380 in words is "forty-seven million, two hundred forty-three thousand, three hundred eighty".