74721712 has 40 divisors (see below), whose sum is σ = 157021200. Its totient is φ = 34241280.

The previous prime is 74721701. The next prime is 74721727. The reversal of 74721712 is 21712747.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29787 + ... + 32197.

It is an arithmetic number, because the mean of its divisors is an integer number (3925530).

Almost surely, 2^74721712 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 74721712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78510600).

74721712 is an abundant number, since it is smaller than the sum of its proper divisors (82299488).

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

74721712 is a wasteful number, since it uses less digits than its factorization.

74721712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2575 counting only the distinct ones).

The product of its digits is 5488, while the sum is 31.

The square root of 74721712 is about 8644.1721408126. The cubic root of 74721712 is about 421.1940924374.

The spelling of 74721712 in words is "seventy-four million, seven hundred twenty-one thousand, seven hundred twelve".