47781894 has 16 divisors (see below), whose sum is σ = 96441840. Its totient is φ = 15780960.

The previous prime is 47781893. The next prime is 47781913. The reversal of 47781894 is 49818774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47781893) 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, 35877 + ... + 37184.

It is an arithmetic number, because the mean of its divisors is an integer number (6027615).

Almost surely, 2^47781894 is an apocalyptic number.

47781894 is an abundant number, since it is smaller than the sum of its proper divisors (48659946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47781894 is a wasteful number, since it uses less digits than its factorization.

47781894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73175.

The product of its digits is 451584, while the sum is 48.

The square root of 47781894 is about 6912.4448641562. Note that the first 3 decimals coincide. The cubic root of 47781894 is about 362.8728314726.

The spelling of 47781894 in words is "forty-seven million, seven hundred eighty-one thousand, eight hundred ninety-four".