74744838420 has 192 divisors, whose sum is σ = 250949271552. Its totient is φ = 16262208000.

The previous prime is 74744838367. The next prime is 74744838437. The reversal of 74744838420 is 2483844747.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 747165 + ... + 841275.

It is an arithmetic number, because the mean of its divisors is an integer number (1307027456).

Almost surely, 2^74744838420 is an apocalyptic number.

74744838420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74744838420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125474635776).

74744838420 is an abundant number, since it is smaller than the sum of its proper divisors (176204433132).

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

74744838420 is a wasteful number, since it uses less digits than its factorization.

74744838420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94222 (or 94220 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 51.

The spelling of 74744838420 in words is "seventy-four billion, seven hundred forty-four million, eight hundred thirty-eight thousand, four hundred twenty".