47454428 has 48 divisors (see below), whose sum is σ = 102273024. Its totient is φ = 18817920.

The previous prime is 47454427. The next prime is 47454479. The reversal of 47454428 is 82445474.

It is a junction number, because it is equal to n+sod(n) for n = 47454391 and 47454400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47454427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18776 + ... + 21152.

It is an arithmetic number, because the mean of its divisors is an integer number (2130688).

Almost surely, 2^47454428 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 47454428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51136512).

47454428 is an abundant number, since it is smaller than the sum of its proper divisors (54818596).

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

47454428 is a wasteful number, since it uses less digits than its factorization.

47454428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2440 counting only the distinct ones).

The product of its digits is 143360, while the sum is 38.

The square root of 47454428 is about 6888.7174423110. The cubic root of 47454428 is about 362.0419657706.

The spelling of 47454428 in words is "forty-seven million, four hundred fifty-four thousand, four hundred twenty-eight".