47815320 has 64 divisors (see below), whose sum is σ = 163941120. Its totient is φ = 10929024.

The previous prime is 47815291. The next prime is 47815331. The reversal of 47815320 is 2351874.

47815320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27622 + ... + 29301.

It is an arithmetic number, because the mean of its divisors is an integer number (2561580).

Almost surely, 2^47815320 is an apocalyptic number.

47815320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47815320 is an abundant number, since it is smaller than the sum of its proper divisors (116125800).

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

47815320 is a wasteful number, since it uses less digits than its factorization.

47815320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56944 (or 56940 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 47815320 is about 6914.8622545934. The cubic root of 47815320 is about 362.9574280911.

It can be divided in two parts, 4781 and 5320, that added together give a palindrome (10101).

The spelling of 47815320 in words is "forty-seven million, eight hundred fifteen thousand, three hundred twenty".