47055840 has 96 divisors (see below), whose sum is σ = 159649056. Its totient is φ = 11581440.

The previous prime is 47055817. The next prime is 47055851. The reversal of 47055840 is 4855074.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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, 2470 + ... + 10010.

It is an arithmetic number, because the mean of its divisors is an integer number (1663011).

Almost surely, 2^47055840 is an apocalyptic number.

47055840 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 47055840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79824528).

47055840 is an abundant number, since it is smaller than the sum of its proper divisors (112593216).

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

47055840 is a wasteful number, since it uses less digits than its factorization.

47055840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572 (or 7564 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 47055840 is about 6859.7259420475. The cubic root of 47055840 is about 361.0254712015.

It can be divided in two parts, 47055 and 840, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 47055840 in words is "forty-seven million, fifty-five thousand, eight hundred forty".