47197920 has 192 divisors, whose sum is σ = 185504256. Its totient is φ = 9799680.

The previous prime is 47197901. The next prime is 47197921. The reversal of 47197920 is 2979174.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47197921) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 36322 + ... + 37598.

It is an arithmetic number, because the mean of its divisors is an integer number (966168).

Almost surely, 2^47197920 is an apocalyptic number.

47197920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47197920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92752128).

47197920 is an abundant number, since it is smaller than the sum of its proper divisors (138306336).

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

47197920 is a wasteful number, since it uses less digits than its factorization.

47197920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 47197920 is about 6870.0742354068. The cubic root of 47197920 is about 361.3884651771.

The spelling of 47197920 in words is "forty-seven million, one hundred ninety-seven thousand, nine hundred twenty".