47455728 has 20 divisors (see below), whose sum is σ = 122594088. Its totient is φ = 15818560.

The previous prime is 47455717. The next prime is 47455747. The reversal of 47455728 is 82755474.

47455728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47455728² = 4504092240019968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47455728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494283 + ... + 494378.

Almost surely, 2^47455728 is an apocalyptic number.

47455728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

47455728 is an abundant number, since it is smaller than the sum of its proper divisors (75138360).

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

47455728 is a wasteful number, since it uses less digits than its factorization.

47455728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988672 (or 988666 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 47455728 is about 6888.8117988518. The cubic root of 47455728 is about 362.0452717513.

The spelling of 47455728 in words is "forty-seven million, four hundred fifty-five thousand, seven hundred twenty-eight".