47821120 has 28 divisors (see below), whose sum is σ = 113874804. Its totient is φ = 19128320.

The previous prime is 47821091. The next prime is 47821139. The reversal of 47821120 is 2112874.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30382144 + 17438976 = 5512^2 + 4176^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74401 + ... + 75040.

Almost surely, 2^47821120 is an apocalyptic number.

47821120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47821120 is an abundant number, since it is smaller than the sum of its proper divisors (66053684).

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

47821120 is a wasteful number, since it uses less digits than its factorization.

47821120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149458 (or 149448 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 47821120 is about 6915.2816283937. The cubic root of 47821120 is about 362.9721030807.

Adding to 47821120 its reverse (2112874), we get a palindrome (49933994).

The spelling of 47821120 in words is "forty-seven million, eight hundred twenty-one thousand, one hundred twenty".