47158778 has 8 divisors (see below), whose sum is σ = 71105268. Its totient is φ = 23457024.

The previous prime is 47158777. The next prime is 47158801. The reversal of 47158778 is 87785174.

It can be written as a sum of positive squares in 2 ways, for example, as 46280809 + 877969 = 6803^2 + 937^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47158777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60701 + ... + 61472.

Almost surely, 2^47158778 is an apocalyptic number.

47158778 is a deficient number, since it is larger than the sum of its proper divisors (23946490).

47158778 is a wasteful number, since it uses less digits than its factorization.

47158778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122368.

The product of its digits is 439040, while the sum is 47.

The square root of 47158778 is about 6867.2249125830. The cubic root of 47158778 is about 361.2885357773.

The spelling of 47158778 in words is "forty-seven million, one hundred fifty-eight thousand, seven hundred seventy-eight".