74491860 has 48 divisors (see below), whose sum is σ = 210442176. Its totient is φ = 19686912.

The previous prime is 74491819. The next prime is 74491861. The reversal of 74491860 is 6819447.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74491861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (4384212).

Almost surely, 2^74491860 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 74491860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105221088).

74491860 is an abundant number, since it is smaller than the sum of its proper divisors (135950316).

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

74491860 is a wasteful number, since it uses less digits than its factorization.

74491860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112 (or 11110 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 74491860 is about 8630.8667003957. The cubic root of 74491860 is about 420.7617694429.

The spelling of 74491860 in words is "seventy-four million, four hundred ninety-one thousand, eight hundred sixty".