47988240 has 80 divisors (see below), whose sum is σ = 151329600. Its totient is φ = 12576256.

The previous prime is 47988209. The next prime is 47988247. The reversal of 47988240 is 4288974.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 47988192 and 47988201.

It is not an unprimeable number, because it can be changed into a prime (47988247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12466 + ... + 15854.

It is an arithmetic number, because the mean of its divisors is an integer number (1891620).

Almost surely, 2^47988240 is an apocalyptic number.

47988240 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 47988240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75664800).

47988240 is an abundant number, since it is smaller than the sum of its proper divisors (103341360).

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

47988240 is a wasteful number, since it uses less digits than its factorization.

47988240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464 (or 3458 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 47988240 is about 6927.3544733903. The cubic root of 47988240 is about 363.3944365059.

The spelling of 47988240 in words is "forty-seven million, nine hundred eighty-eight thousand, two hundred forty".