47431384 has 64 divisors (see below), whose sum is σ = 119427840. Its totient is φ = 17055360.

The previous prime is 47431381. The next prime is 47431399. The reversal of 47431384 is 48313474.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5047 + ... + 10969.

It is an arithmetic number, because the mean of its divisors is an integer number (1866060).

Almost surely, 2^47431384 is an apocalyptic number.

47431384 is a gapful number since it is divisible by the number (44) 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 47431384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59713920).

47431384 is an abundant number, since it is smaller than the sum of its proper divisors (71996456).

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

47431384 is a wasteful number, since it uses less digits than its factorization.

47431384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960 (or 5956 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 47431384 is about 6887.0446491946. The cubic root of 47431384 is about 361.9833534260.

The spelling of 47431384 in words is "forty-seven million, four hundred thirty-one thousand, three hundred eighty-four".