9809331428 has 48 divisors (see below), whose sum is σ = 18734714880. Its totient is φ = 4466824704.

The previous prime is 9809331409. The next prime is 9809331451. The reversal of 9809331428 is 8241339089.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5519276 + ... + 5521052.

It is an arithmetic number, because the mean of its divisors is an integer number (390306560).

Almost surely, 2^9809331428 is an apocalyptic number.

It is an amenable number.

9809331428 is a deficient number, since it is larger than the sum of its proper divisors (8925383452).

9809331428 is a wasteful number, since it uses less digits than its factorization.

9809331428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156 (or 3154 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 9809331428 is about 99042.0689808124. The cubic root of 9809331428 is about 2140.6539641079.

The spelling of 9809331428 in words is "nine billion, eight hundred nine million, three hundred thirty-one thousand, four hundred twenty-eight".