71974146 has 8 divisors (see below), whose sum is σ = 143948304. Its totient is φ = 23991380.

The previous prime is 71974129. The next prime is 71974181. The reversal of 71974146 is 64147917.

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

71974146 is an admirable number.

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, 5997840 + ... + 5997851.

It is an arithmetic number, because the mean of its divisors is an integer number (17993538).

Almost surely, 2^71974146 is an apocalyptic number.

71974146 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.

71974146 is a wasteful number, since it uses less digits than its factorization.

71974146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995696.

The product of its digits is 42336, while the sum is 39.

The square root of 71974146 is about 8483.7577758915. The cubic root of 71974146 is about 415.9669637535.

The spelling of 71974146 in words is "seventy-one million, nine hundred seventy-four thousand, one hundred forty-six".