47378 has 4 divisors (see below), whose sum is σ = 71070. Its totient is φ = 23688.

The previous prime is 47363. The next prime is 47381. The reversal of 47378 is 87374.

47378 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47089 + 289 = 217^2 + 17^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47378.

It is an unprimeable number.

47378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11843 + ... + 11846.

2⁴⁷³⁷⁸ is an apocalyptic number.

47378 is a deficient number, since it is larger than the sum of its proper divisors (23692).

47378 is a wasteful number, since it uses less digits than its factorization.

47378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23691.

The product of its digits is 4704, while the sum is 29.

The square root of 47378 is about 217.6648800335. The cubic root of 47378 is about 36.1847498415.

It can be divided in two parts, 47 and 378, that multiplied together give a triangular number (17766 = T₁₈₈).

The spelling of 47378 in words is "forty-seven thousand, three hundred seventy-eight".