394728235740 has 72 divisors (see below), whose sum is σ = 1197404208000. Its totient is φ = 105255421824.

The previous prime is 394728235739. The next prime is 394728235751. The reversal of 394728235740 is 47532827493.

It is a happy number.

394728235740 is a `hidden beast` number, since 3 + 9 + 4 + 7 + 282 + 357 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4410517 + ... + 4499123.

It is an arithmetic number, because the mean of its divisors is an integer number (16630614000).

Almost surely, 2^394728235740 is an apocalyptic number.

394728235740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394728235740 is an abundant number, since it is smaller than the sum of its proper divisors (802675972260).

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

394728235740 is a wasteful number, since it uses less digits than its factorization.

394728235740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113371 (or 113366 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 394728235740 in words is "three hundred ninety-four billion, seven hundred twenty-eight million, two hundred thirty-five thousand, seven hundred forty".