47838870 has 64 divisors (see below), whose sum is σ = 128471040. Its totient is φ = 12667104.

The previous prime is 47838853. The next prime is 47838883. The reversal of 47838870 is 7883874.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43467 + ... + 44553.

It is an arithmetic number, because the mean of its divisors is an integer number (2007360).

Almost surely, 2^47838870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47838870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64235520).

47838870 is an abundant number, since it is smaller than the sum of its proper divisors (80632170).

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

47838870 is a wasteful number, since it uses less digits than its factorization.

47838870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 47838870 is about 6916.5648988497. The cubic root of 47838870 is about 363.0170062383.

The spelling of 47838870 in words is "forty-seven million, eight hundred thirty-eight thousand, eight hundred seventy".