47993680 has 40 divisors (see below), whose sum is σ = 127527552. Its totient is φ = 16454784.

The previous prime is 47993623. The next prime is 47993713. The reversal of 47993680 is 8639974.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 47993680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42292 + ... + 43411.

Almost surely, 2^47993680 is an apocalyptic number.

47993680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47993680 is an abundant number, since it is smaller than the sum of its proper divisors (79533872).

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

47993680 is a wasteful number, since it uses less digits than its factorization.

47993680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85723 (or 85717 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 47993680 is about 6927.7471085483. The cubic root of 47993680 is about 363.4081675856.

The spelling of 47993680 in words is "forty-seven million, nine hundred ninety-three thousand, six hundred eighty".