9992428 has 6 divisors (see below), whose sum is σ = 17486756. Its totient is φ = 4996212.

The previous prime is 9992401. The next prime is 9992449. The reversal of 9992428 is 8242999.

It is a happy number.

9992428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249050 + ... + 1249057.

Almost surely, 2^9992428 is an apocalyptic number.

It is an amenable number.

9992428 is a deficient number, since it is larger than the sum of its proper divisors (7494328).

9992428 is a wasteful number, since it uses less digits than its factorization.

9992428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498111 (or 2498109 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 9992428 is about 3161.0801951232. The cubic root of 9992428 is about 215.3890773408.

The spelling of 9992428 in words is "nine million, nine hundred ninety-two thousand, four hundred twenty-eight".