47131620 has 24 divisors (see below), whose sum is σ = 131968704. Its totient is φ = 12568416.

The previous prime is 47131559. The next prime is 47131627. The reversal of 47131620 is 2613174.

It is not an unprimeable number, because it can be changed into a prime (47131627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392704 + ... + 392823.

It is an arithmetic number, because the mean of its divisors is an integer number (5498696).

Almost surely, 2^47131620 is an apocalyptic number.

It is an amenable number.

47131620 is an abundant number, since it is smaller than the sum of its proper divisors (84837084).

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

47131620 is a wasteful number, since it uses less digits than its factorization.

47131620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785539 (or 785537 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 47131620 is about 6865.2472643016. The cubic root of 47131620 is about 361.2191689943.

Adding to 47131620 its reverse (2613174), we get a palindrome (49744794).

The spelling of 47131620 in words is "forty-seven million, one hundred thirty-one thousand, six hundred twenty".