47808810 has 144 divisors (see below), whose sum is σ = 149012136. Its totient is φ = 10596096.

The previous prime is 47808767. The next prime is 47808833. The reversal of 47808810 is 1880874.

It can be written as a sum of positive squares in 4 ways, for example, as 47734281 + 74529 = 6909^2 + 273^2 .

It is a super-2 number, since 2×47808810² = 4571364627232200, which contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 163024 + ... + 163316.

Almost surely, 2^47808810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47808810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74506068).

47808810 is an abundant number, since it is smaller than the sum of its proper divisors (101203326).

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

47808810 is a wasteful number, since it uses less digits than its factorization.

47808810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 47808810 is about 6914.3915133582. The cubic root of 47808810 is about 362.9409552668.

The spelling of 47808810 in words is "forty-seven million, eight hundred eight thousand, eight hundred ten".