47278452 has 48 divisors (see below), whose sum is σ = 122028032. Its totient is φ = 14152320.

The previous prime is 47278433. The next prime is 47278459. The reversal of 47278452 is 25487274.

47278452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 47278452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47278459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677 + ... + 9867.

Almost surely, 2^47278452 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 47278452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61014016).

47278452 is an abundant number, since it is smaller than the sum of its proper divisors (74749580).

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

47278452 is a wasteful number, since it uses less digits than its factorization.

47278452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8246 counting only the distinct ones).

The product of its digits is 125440, while the sum is 39.

The square root of 47278452 is about 6875.9328094448. The cubic root of 47278452 is about 361.5938894763.

The spelling of 47278452 in words is "forty-seven million, two hundred seventy-eight thousand, four hundred fifty-two".