47297728 has 14 divisors (see below), whose sum is σ = 93856556. Its totient is φ = 23648832.

The previous prime is 47297717. The next prime is 47297737. The reversal of 47297728 is 82779274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369450 + ... + 369577.

Almost surely, 2^47297728 is an apocalyptic number.

It is an amenable number.

47297728 is a deficient number, since it is larger than the sum of its proper divisors (46558828).

47297728 is an equidigital number, since it uses as much as digits as its factorization.

47297728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739039 (or 739029 counting only the distinct ones).

The product of its digits is 395136, while the sum is 46.

The square root of 47297728 is about 6877.3343673258. The cubic root of 47297728 is about 361.6430248750.

The spelling of 47297728 in words is "forty-seven million, two hundred ninety-seven thousand, seven hundred twenty-eight".