71974912 has 60 divisors (see below), whose sum is σ = 150990336. Its totient is φ = 34242560.

The previous prime is 71974871. The next prime is 71974913. The reversal of 71974912 is 21947917.

Its product of digits (31752) is a multiple of the sum of its prime divisors (216).

It is not an unprimeable number, because it can be changed into a prime (71974913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376737 + ... + 376927.

Almost surely, 2^71974912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71974912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75495168).

71974912 is an abundant number, since it is smaller than the sum of its proper divisors (79015424).

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

71974912 is an equidigital number, since it uses as much as digits as its factorization.

71974912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 216 counting only the distinct ones).

The product of its digits is 31752, while the sum is 40.

The square root of 71974912 is about 8483.8029208604. The cubic root of 71974912 is about 415.9684394203.

The spelling of 71974912 in words is "seventy-one million, nine hundred seventy-four thousand, nine hundred twelve".