47447328 has 48 divisors (see below), whose sum is σ = 126675360. Its totient is φ = 15545856.

The previous prime is 47447311. The next prime is 47447339. The reversal of 47447328 is 82374474.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 9852.

It is an arithmetic number, because the mean of its divisors is an integer number (2639070).

Almost surely, 2^47447328 is an apocalyptic number.

47447328 is a gapful number since it is divisible by the number (48) 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 47447328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63337680).

47447328 is an abundant number, since it is smaller than the sum of its proper divisors (79228032).

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

47447328 is a wasteful number, since it uses less digits than its factorization.

47447328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8449 (or 8441 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 47447328 is about 6888.2020876278. The cubic root of 47447328 is about 362.0239089649.

It can be divided in two parts, 4744732 and 8, that added together give a triangular number (4744740 = T₃₀₈₀).

The spelling of 47447328 in words is "forty-seven million, four hundred forty-seven thousand, three hundred twenty-eight".