9994333428 has 36 divisors (see below), whose sum is σ = 26361867168. Its totient is φ = 3186598800.

The previous prime is 9994333411. The next prime is 9994333457. The reversal of 9994333428 is 8243334999.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6034398 + ... + 6036053.

It is an arithmetic number, because the mean of its divisors is an integer number (732274088).

Almost surely, 2^9994333428 is an apocalyptic number.

It is an amenable number.

9994333428 is an abundant number, since it is smaller than the sum of its proper divisors (16367533740).

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

9994333428 is a wasteful number, since it uses less digits than its factorization.

9994333428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070484 (or 12070479 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The square root of 9994333428 is about 99971.6631251076. The cubic root of 9994333428 is about 2154.0276711658.

The spelling of 9994333428 in words is "nine billion, nine hundred ninety-four million, three hundred thirty-three thousand, four hundred twenty-eight".