47728743 has 4 divisors (see below), whose sum is σ = 63638328. Its totient is φ = 31819160.

The previous prime is 47728729. The next prime is 47728771. The reversal of 47728743 is 34782774.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47728743 - 2⁵ = 47728711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47728695 and 47728704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47728783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7954788 + ... + 7954793.

It is an arithmetic number, because the mean of its divisors is an integer number (15909582).

Almost surely, 2^47728743 is an apocalyptic number.

47728743 is a deficient number, since it is larger than the sum of its proper divisors (15909585).

47728743 is a wasteful number, since it uses less digits than its factorization.

47728743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15909584.

The product of its digits is 263424, while the sum is 42.

The square root of 47728743 is about 6908.5992067857. The cubic root of 47728743 is about 362.7382323033.

The spelling of 47728743 in words is "forty-seven million, seven hundred twenty-eight thousand, seven hundred forty-three".