47728636 has 12 divisors (see below), whose sum is σ = 83775328. Its totient is φ = 23792832.

The previous prime is 47728621. The next prime is 47728649. The reversal of 47728636 is 63682774.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47728592 and 47728601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16356 + ... + 19051.

Almost surely, 2^47728636 is an apocalyptic number.

It is an amenable number.

47728636 is a deficient number, since it is larger than the sum of its proper divisors (36046692).

47728636 is a wasteful number, since it uses less digits than its factorization.

47728636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35748 (or 35746 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 47728636 is about 6908.5914628092. The cubic root of 47728636 is about 362.7379612366.

The spelling of 47728636 in words is "forty-seven million, seven hundred twenty-eight thousand, six hundred thirty-six".