47415420 has 144 divisors (see below), whose sum is σ = 161808192. Its totient is φ = 11151360.

The previous prime is 47415391. The next prime is 47415421. The reversal of 47415420 is 2451474.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47415421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53380 + ... + 54260.

It is an arithmetic number, because the mean of its divisors is an integer number (1123668).

Almost surely, 2^47415420 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 47415420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80904096).

47415420 is an abundant number, since it is smaller than the sum of its proper divisors (114392772).

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

47415420 is a wasteful number, since it uses less digits than its factorization.

47415420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 47415420 is about 6885.8855639634. The cubic root of 47415420 is about 361.9427379080.

Adding to 47415420 its reverse (2451474), we get a palindrome (49866894).

The spelling of 47415420 in words is "forty-seven million, four hundred fifteen thousand, four hundred twenty".