47040840 has 192 divisors, whose sum is σ = 190719360. Its totient is φ = 9768960.

The previous prime is 47040809. The next prime is 47040859. The reversal of 47040840 is 4804074.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26872 + ... + 28568.

It is an arithmetic number, because the mean of its divisors is an integer number (993330).

Almost surely, 2^47040840 is an apocalyptic number.

47040840 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 47040840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95359680).

47040840 is an abundant number, since it is smaller than the sum of its proper divisors (143678520).

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

47040840 is a wasteful number, since it uses less digits than its factorization.

47040840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 47040840 is about 6858.6325167631. The cubic root of 47040840 is about 360.9871057362.

The spelling of 47040840 in words is "forty-seven million, forty thousand, eight hundred forty".