47831328 has 36 divisors (see below), whose sum is σ = 136021158. Its totient is φ = 15943680.

The previous prime is 47831327. The next prime is 47831347. The reversal of 47831328 is 82313874.

It can be written as a sum of positive squares in only one way, i.e., 43718544 + 4112784 = 6612^2 + 2028^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 47831292 and 47831301.

It is not an unprimeable number, because it can be changed into a prime (47831327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82753 + ... + 83328.

Almost surely, 2^47831328 is an apocalyptic number.

47831328 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47831328 is an abundant number, since it is smaller than the sum of its proper divisors (88189830).

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

47831328 is a wasteful number, since it uses less digits than its factorization.

47831328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166097 (or 166086 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 47831328 is about 6916.0196645180. The cubic root of 47831328 is about 362.9979281807.

The spelling of 47831328 in words is "forty-seven million, eight hundred thirty-one thousand, three hundred twenty-eight".