9623871428 has 24 divisors (see below), whose sum is σ = 17941889952. Its totient is φ = 4501090944.

The previous prime is 9623871427. The next prime is 9623871449. The reversal of 9623871428 is 8241783269.

9623871428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9623871427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 423050 + ... + 445217.

It is an arithmetic number, because the mean of its divisors is an integer number (747578748).

Almost surely, 2^9623871428 is an apocalyptic number.

It is an amenable number.

9623871428 is a deficient number, since it is larger than the sum of its proper divisors (8318018524).

9623871428 is a wasteful number, since it uses less digits than its factorization.

9623871428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868451 (or 868449 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 9623871428 is about 98101.3324476278. The cubic root of 9623871428 is about 2127.0772897856.

The spelling of 9623871428 in words is "nine billion, six hundred twenty-three million, eight hundred seventy-one thousand, four hundred twenty-eight".