47509328 has 10 divisors (see below), whose sum is σ = 92049354. Its totient is φ = 23754656.

The previous prime is 47509327. The next prime is 47509333. The reversal of 47509328 is 82390574.

It can be written as a sum of positive squares in only one way, i.e., 41319184 + 6190144 = 6428^2 + 2488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47509291 and 47509300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47509327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1484651 + ... + 1484682.

Almost surely, 2^47509328 is an apocalyptic number.

It is an amenable number.

47509328 is a deficient number, since it is larger than the sum of its proper divisors (44540026).

47509328 is a wasteful number, since it uses less digits than its factorization.

47509328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969341 (or 2969335 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 47509328 is about 6892.7010670709. The cubic root of 47509328 is about 362.1815273444.

The spelling of 47509328 in words is "forty-seven million, five hundred nine thousand, three hundred twenty-eight".