47840420 has 12 divisors (see below), whose sum is σ = 100464924. Its totient is φ = 19136160.

The previous prime is 47840417. The next prime is 47840509. The reversal of 47840420 is 2404874.

It can be written as a sum of positive squares in 2 ways, for example, as 28987456 + 18852964 = 5384^2 + 4342^2 .

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, 1195991 + ... + 1196030.

It is an arithmetic number, because the mean of its divisors is an integer number (8372077).

Almost surely, 2^47840420 is an apocalyptic number.

It is an amenable number.

47840420 is an abundant number, since it is smaller than the sum of its proper divisors (52624504).

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

47840420 is a wasteful number, since it uses less digits than its factorization.

47840420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392030 (or 2392028 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 47840420 is about 6916.6769477835. The cubic root of 47840420 is about 363.0209268318.

The spelling of 47840420 in words is "forty-seven million, eight hundred forty thousand, four hundred twenty".