74409516 has 72 divisors (see below), whose sum is σ = 200425680. Its totient is φ = 24121152.

The previous prime is 74409499. The next prime is 74409521. The reversal of 74409516 is 61590447.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34930 + ... + 36998.

It is an arithmetic number, because the mean of its divisors is an integer number (2783690).

Almost surely, 2^74409516 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 74409516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100212840).

74409516 is an abundant number, since it is smaller than the sum of its proper divisors (126016164).

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

74409516 is a wasteful number, since it uses less digits than its factorization.

74409516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 74409516 is about 8626.0950609184. The cubic root of 74409516 is about 420.6066742802.

The spelling of 74409516 in words is "seventy-four million, four hundred nine thousand, five hundred sixteen".