47173830 has 64 divisors (see below), whose sum is σ = 124409088. Its totient is φ = 11352960.

The previous prime is 47173799. The next prime is 47173831. The reversal of 47173830 is 3837174.

It is a super-3 number, since 3×47173830³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 47173791 and 47173800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47173831) 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, 53352 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (1943892).

Almost surely, 2^47173830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47173830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62204544).

47173830 is an abundant number, since it is smaller than the sum of its proper divisors (77235258).

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

47173830 is a wasteful number, since it uses less digits than its factorization.

47173830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 47173830 is about 6868.3207554685. The cubic root of 47173830 is about 361.3269700257.

The spelling of 47173830 in words is "forty-seven million, one hundred seventy-three thousand, eight hundred thirty".