47932138 has 16 divisors (see below), whose sum is σ = 77446656. Its totient is φ = 22183920.

The previous prime is 47932133. The next prime is 47932147. The reversal of 47932138 is 83123974.

It is a junction number, because it is equal to n+sod(n) for n = 47932097 and 47932106.

It is not an unprimeable number, because it can be changed into a prime (47932133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15381 + ... + 18232.

It is an arithmetic number, because the mean of its divisors is an integer number (4840416).

Almost surely, 2^47932138 is an apocalyptic number.

47932138 is a deficient number, since it is larger than the sum of its proper divisors (29514518).

47932138 is a wasteful number, since it uses less digits than its factorization.

47932138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33669.

The product of its digits is 36288, while the sum is 37.

The square root of 47932138 is about 6923.3039800373. The cubic root of 47932138 is about 363.2527691268.

The spelling of 47932138 in words is "forty-seven million, nine hundred thirty-two thousand, one hundred thirty-eight".