74516420 has 48 divisors (see below), whose sum is σ = 174702528. Its totient is φ = 26463360.

The previous prime is 74516419. The next prime is 74516437. The reversal of 74516420 is 2461547.

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 15 ways as a sum of consecutive naturals, for example, 5522 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (3639636).

Almost surely, 2^74516420 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 74516420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87351264).

74516420 is an abundant number, since it is smaller than the sum of its proper divisors (100186108).

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

74516420 is a wasteful number, since it uses less digits than its factorization.

74516420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940 (or 7938 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 74516420 is about 8632.2893834718. The cubic root of 74516420 is about 420.8080061438.

Adding to 74516420 its reverse (2461547), we get a palindrome (76977967).

The spelling of 74516420 in words is "seventy-four million, five hundred sixteen thousand, four hundred twenty".