47998778 has 8 divisors (see below), whose sum is σ = 72051168. Its totient is φ = 23981724.

The previous prime is 47998751. The next prime is 47998787. The reversal of 47998778 is 87789974.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5126 + ... + 11057.

It is an arithmetic number, because the mean of its divisors is an integer number (9006396).

Almost surely, 2^47998778 is an apocalyptic number.

47998778 is a deficient number, since it is larger than the sum of its proper divisors (24052390).

47998778 is a wasteful number, since it uses less digits than its factorization.

47998778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17668.

The product of its digits is 7112448, while the sum is 59.

The square root of 47998778 is about 6928.1150394606. The cubic root of 47998778 is about 363.4210344828.

The spelling of 47998778 in words is "forty-seven million, nine hundred ninety-eight thousand, seven hundred seventy-eight".