840030748 has 24 divisors (see below), whose sum is σ = 1535812992. Its totient is φ = 401271024.

The previous prime is 840030743. The next prime is 840030773. The reversal of 840030748 is 847030048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840030743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78411 + ... + 88477.

It is an arithmetic number, because the mean of its divisors is an integer number (63992208).

Almost surely, 2^840030748 is an apocalyptic number.

It is an amenable number.

840030748 is a deficient number, since it is larger than the sum of its proper divisors (695782244).

840030748 is a wasteful number, since it uses less digits than its factorization.

840030748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001 (or 10999 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 840030748 is about 28983.2839409202. The cubic root of 840030748 is about 943.5503085938.

The spelling of 840030748 in words is "eight hundred forty million, thirty thousand, seven hundred forty-eight".