74730305406 has 32 divisors (see below), whose sum is σ = 161619494400. Its totient is φ = 22945974656.

The previous prime is 74730305339. The next prime is 74730305437. The reversal of 74730305406 is 60450303747.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7789356 + ... + 7798943.

It is an arithmetic number, because the mean of its divisors is an integer number (5050609200).

Almost surely, 2^74730305406 is an apocalyptic number.

74730305406 is an abundant number, since it is smaller than the sum of its proper divisors (86889188994).

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

74730305406 is a wasteful number, since it uses less digits than its factorization.

74730305406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15588368.

The product of its (nonzero) digits is 211680, while the sum is 39.

The spelling of 74730305406 in words is "seventy-four billion, seven hundred thirty million, three hundred five thousand, four hundred six".