47381637 has 16 divisors (see below), whose sum is σ = 64471680. Its totient is φ = 30945600.

The previous prime is 47381603. The next prime is 47381639. The reversal of 47381637 is 73618374.

It is not a de Polignac number, because 47381637 - 2²⁰ = 46333061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47381595 and 47381604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47381639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37939 + ... + 39167.

It is an arithmetic number, because the mean of its divisors is an integer number (4029480).

Almost surely, 2^47381637 is an apocalyptic number.

It is an amenable number.

47381637 is a deficient number, since it is larger than the sum of its proper divisors (17090043).

47381637 is a wasteful number, since it uses less digits than its factorization.

47381637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its digits is 84672, while the sum is 39.

The square root of 47381637 is about 6883.4320654743. The cubic root of 47381637 is about 361.8567573230.

The spelling of 47381637 in words is "forty-seven million, three hundred eighty-one thousand, six hundred thirty-seven".