47320144 has 20 divisors (see below), whose sum is σ = 91797696. Its totient is φ = 23630432.

The previous prime is 47320139. The next prime is 47320153. The reversal of 47320144 is 44102374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17337 + ... + 19879.

Almost surely, 2^47320144 is an apocalyptic number.

It is an amenable number.

47320144 is a deficient number, since it is larger than the sum of its proper divisors (44477552).

47320144 is a wasteful number, since it uses less digits than its factorization.

47320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3708 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 47320144 is about 6878.9638754685. The cubic root of 47320144 is about 361.7001474900.

The spelling of 47320144 in words is "forty-seven million, three hundred twenty thousand, one hundred forty-four".