47791480 has 64 divisors (see below), whose sum is σ = 119854080. Its totient is φ = 17001600.

The previous prime is 47791477. The next prime is 47791481. The reversal of 47791480 is 8419774.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47791481) 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, 19525 + ... + 21835.

It is an arithmetic number, because the mean of its divisors is an integer number (1872720).

Almost surely, 2^47791480 is an apocalyptic number.

47791480 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 47791480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59927040).

47791480 is an abundant number, since it is smaller than the sum of its proper divisors (72062600).

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

47791480 is a wasteful number, since it uses less digits than its factorization.

47791480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 47791480 is about 6913.1382164687. The cubic root of 47791480 is about 362.8970963567.

The spelling of 47791480 in words is "forty-seven million, seven hundred ninety-one thousand, four hundred eighty".