47839820 has 96 divisors (see below), whose sum is σ = 120938496. Its totient is φ = 15552000.

The previous prime is 47839811. The next prime is 47839823. The reversal of 47839820 is 2893874.

It is not an unprimeable number, because it can be changed into a prime (47839823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316745 + ... + 316895.

It is an arithmetic number, because the mean of its divisors is an integer number (1259776).

Almost surely, 2^47839820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47839820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60469248).

47839820 is an abundant number, since it is smaller than the sum of its proper divisors (73098676).

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

47839820 is a wasteful number, since it uses less digits than its factorization.

47839820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 47839820 is about 6916.6335742180. The cubic root of 47839820 is about 363.0194091927.

The spelling of 47839820 in words is "forty-seven million, eight hundred thirty-nine thousand, eight hundred twenty".