47728773 has 12 divisors (see below), whose sum is σ = 69072588. Its totient is φ = 31758720.

The previous prime is 47728771. The next prime is 47728781. The reversal of 47728773 is 37782774.

It can be written as a sum of positive squares in 2 ways, for example, as 11512449 + 36216324 = 3393^2 + 6018^2 .

It is not a de Polignac number, because 47728773 - 2¹ = 47728771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47728771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (5756049).

Almost surely, 2^47728773 is an apocalyptic number.

It is an amenable number.

47728773 is a deficient number, since it is larger than the sum of its proper divisors (21343815).

47728773 is a wasteful number, since it uses less digits than its factorization.

47728773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084 (or 10081 counting only the distinct ones).

The product of its digits is 460992, while the sum is 45.

The square root of 47728773 is about 6908.6013779925. The cubic root of 47728773 is about 362.7383083032.

The spelling of 47728773 in words is "forty-seven million, seven hundred twenty-eight thousand, seven hundred seventy-three".