47805420 has 96 divisors (see below), whose sum is σ = 145410048. Its totient is φ = 11665152.

The previous prime is 47805413. The next prime is 47805469. The reversal of 47805420 is 2450874.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130077 + ... + 130443.

It is an arithmetic number, because the mean of its divisors is an integer number (1514688).

Almost surely, 2^47805420 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 47805420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72705024).

47805420 is an abundant number, since it is smaller than the sum of its proper divisors (97604628).

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

47805420 is a wasteful number, since it uses less digits than its factorization.

47805420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 47805420 is about 6914.1463681354. The cubic root of 47805420 is about 362.9323766602.

The spelling of 47805420 in words is "forty-seven million, eight hundred five thousand, four hundred twenty".