71833978 has 8 divisors (see below), whose sum is σ = 107851968. Its totient is φ = 35883324.

The previous prime is 71833973. The next prime is 71833999. The reversal of 71833978 is 87933817.

It is a happy number.

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 (71833973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14076 + ... + 18487.

It is an arithmetic number, because the mean of its divisors is an integer number (13481496).

Almost surely, 2^71833978 is an apocalyptic number.

71833978 is a deficient number, since it is larger than the sum of its proper divisors (36017990).

71833978 is a wasteful number, since it uses less digits than its factorization.

71833978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33668.

The product of its digits is 254016, while the sum is 46.

The square root of 71833978 is about 8475.4927880330. The cubic root of 71833978 is about 415.6967595621.

The spelling of 71833978 in words is "seventy-one million, eight hundred thirty-three thousand, nine hundred seventy-eight".