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BaseRepresentation
bin1011100100111100
32102001022
423210330
53004140
61003312
7255152
oct134474
972038
1047420
113269a
1223538
1318779
14133d2
15e0b5
hexb93c

47420 has 12 divisors (see below), whose sum is σ = 99624. Its totient is φ = 18960.

The previous prime is 47419. The next prime is 47431. The reversal of 47420 is 2474.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166 + ... + 1205.

It is an arithmetic number, because the mean of its divisors is an integer number (8302).

247420 is an apocalyptic number.

It is an amenable number.

47420 is an abundant number, since it is smaller than the sum of its proper divisors (52204).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49812).

47420 is a wasteful number, since it uses less digits than its factorization.

47420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 47420 is about 217.7613372479. The cubic root of 47420 is about 36.1954391250.

Adding to 47420 its reverse (2474), we get a palindrome (49894).

It can be divided in two parts, 474 and 20, that added together give a palindrome (494).

The spelling of 47420 in words is "forty-seven thousand, four hundred twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 2371 4742 9484 11855 23710 47420