47851284 has 24 divisors (see below), whose sum is σ = 120242080. Its totient is φ = 14723424.

The previous prime is 47851261. The next prime is 47851289. The reversal of 47851284 is 48215874.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47851289) 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, 153214 + ... + 153525.

Almost surely, 2^47851284 is an apocalyptic number.

It is an amenable number.

47851284 is an abundant number, since it is smaller than the sum of its proper divisors (72390796).

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

47851284 is a wasteful number, since it uses less digits than its factorization.

47851284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306759 (or 306757 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 47851284 is about 6917.4622514330. The cubic root of 47851284 is about 363.0484040212.

The spelling of 47851284 in words is "forty-seven million, eight hundred fifty-one thousand, two hundred eighty-four".