47840018 has 8 divisors (see below), whose sum is σ = 72014448. Its totient is φ = 23835204.

The previous prime is 47839997. The next prime is 47840027. The reversal of 47840018 is 81004874.

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

It is a Curzon 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, 41696 + ... + 42827.

It is an arithmetic number, because the mean of its divisors is an integer number (9001806).

Almost surely, 2^47840018 is an apocalyptic number.

47840018 is a deficient number, since it is larger than the sum of its proper divisors (24174430).

47840018 is a wasteful number, since it uses less digits than its factorization.

47840018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84808.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 47840018 is about 6916.6478875247. The cubic root of 47840018 is about 363.0199100150.

The spelling of 47840018 in words is "forty-seven million, eight hundred forty thousand, eighteen".