47135808 has 168 divisors, whose sum is σ = 146608800. Its totient is φ = 14432256.

The previous prime is 47135771. The next prime is 47135813. The reversal of 47135808 is 80853174.

47135808 is a `hidden beast` number, since 4 + 71 + 3 + 580 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645660 + ... + 645732.

Almost surely, 2^47135808 is an apocalyptic number.

47135808 is a gapful number since it is divisible by the number (48) 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 47135808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73304400).

47135808 is an abundant number, since it is smaller than the sum of its proper divisors (99472992).

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

47135808 is a wasteful number, since it uses less digits than its factorization.

47135808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 47135808 is about 6865.5522720317. The cubic root of 47135808 is about 361.2298676935.

The spelling of 47135808 in words is "forty-seven million, one hundred thirty-five thousand, eight hundred eight".