47781036 has 48 divisors (see below), whose sum is σ = 125181280. Its totient is φ = 15759360.

The previous prime is 47781011. The next prime is 47781047. The reversal of 47781036 is 63018774.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8196 + ... + 12756.

Almost surely, 2^47781036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47781036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62590640).

47781036 is an abundant number, since it is smaller than the sum of its proper divisors (77400244).

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

47781036 is a wasteful number, since it uses less digits than its factorization.

47781036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671 (or 4663 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 47781036 is about 6912.3828018998. The cubic root of 47781036 is about 362.8706594731.

The spelling of 47781036 in words is "forty-seven million, seven hundred eighty-one thousand, thirty-six".