47172072 has 16 divisors (see below), whose sum is σ = 117930240. Its totient is φ = 15724016.

The previous prime is 47172071. The next prime is 47172091. The reversal of 47172072 is 27027174.

It is not an unprimeable number, because it can be changed into a prime (47172071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982728 + ... + 982775.

It is an arithmetic number, because the mean of its divisors is an integer number (7370640).

Almost surely, 2^47172072 is an apocalyptic number.

It is an amenable number.

47172072 is an abundant number, since it is smaller than the sum of its proper divisors (70758168).

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

47172072 is a wasteful number, since it uses less digits than its factorization.

47172072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965512 (or 1965508 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 47172072 is about 6868.1927753959. The cubic root of 47172072 is about 361.3224815151.

The spelling of 47172072 in words is "forty-seven million, one hundred seventy-two thousand, seventy-two".