47729738 has 16 divisors (see below), whose sum is σ = 85380480. Its totient is φ = 19566096.

The previous prime is 47729713. The next prime is 47729743. The reversal of 47729738 is 83792774.

It is a junction number, because it is equal to n+sod(n) for n = 47729692 and 47729701.

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 in 7 ways as a sum of consecutive naturals, for example, 73793 + ... + 74436.

It is an arithmetic number, because the mean of its divisors is an integer number (5336280).

Almost surely, 2^47729738 is an apocalyptic number.

47729738 is a deficient number, since it is larger than the sum of its proper divisors (37650742).

47729738 is a wasteful number, since it uses less digits than its factorization.

47729738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148261.

The product of its digits is 592704, while the sum is 47.

The square root of 47729738 is about 6908.6712181142. The cubic root of 47729738 is about 362.7407529510.

The spelling of 47729738 in words is "forty-seven million, seven hundred twenty-nine thousand, seven hundred thirty-eight".