993107428 has 48 divisors (see below), whose sum is σ = 1973704320. Its totient is φ = 434363904.

The previous prime is 993107419. The next prime is 993107443. The reversal of 993107428 is 824701399.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 61225 + ... + 75727.

It is an arithmetic number, because the mean of its divisors is an integer number (41118840).

Almost surely, 2^993107428 is an apocalyptic number.

It is an amenable number.

993107428 is a deficient number, since it is larger than the sum of its proper divisors (980596892).

993107428 is a wasteful number, since it uses less digits than its factorization.

993107428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14596 (or 14594 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 993107428 is about 31513.6070293453. The cubic root of 993107428 is about 997.6971770772.

The spelling of 993107428 in words is "nine hundred ninety-three million, one hundred seven thousand, four hundred twenty-eight".