47781044 has 12 divisors (see below), whose sum is σ = 86314368. Its totient is φ = 23119800.

The previous prime is 47781011. The next prime is 47781047. The reversal of 47781044 is 44018774.

It is a junction number, because it is equal to n+sod(n) for n = 47780995 and 47781013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47781047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192542 + ... + 192789.

It is an arithmetic number, because the mean of its divisors is an integer number (7192864).

Almost surely, 2^47781044 is an apocalyptic number.

It is an amenable number.

47781044 is a deficient number, since it is larger than the sum of its proper divisors (38533324).

47781044 is a wasteful number, since it uses less digits than its factorization.

47781044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385366 (or 385364 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 47781044 is about 6912.3833805714. The cubic root of 47781044 is about 362.8706797249.

The spelling of 47781044 in words is "forty-seven million, seven hundred eighty-one thousand, forty-four".