47787378 has 8 divisors (see below), whose sum is σ = 95574768. Its totient is φ = 15929124.

The previous prime is 47787371. The next prime is 47787401. The reversal of 47787378 is 87378774.

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

47787378 is an admirable number.

It is a super-2 number, since 2×47787378² = 4567266992229768, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47787378.

It is not an unprimeable number, because it can be changed into a prime (47787371) 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, 3982276 + ... + 3982287.

It is an arithmetic number, because the mean of its divisors is an integer number (11946846).

Almost surely, 2^47787378 is an apocalyptic number.

47787378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47787378 is a wasteful number, since it uses less digits than its factorization.

47787378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964568.

The product of its digits is 1843968, while the sum is 51.

The square root of 47787378 is about 6912.8415286335. The cubic root of 47787378 is about 362.8867134288.

The spelling of 47787378 in words is "forty-seven million, seven hundred eighty-seven thousand, three hundred seventy-eight".