9201128 has 8 divisors (see below), whose sum is σ = 17252130. Its totient is φ = 4600560.

The previous prime is 9201121. The next prime is 9201133. The reversal of 9201128 is 8211029.

It can be written as a sum of positive squares in only one way, i.e., 9132484 + 68644 = 3022^2 + 262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575063 + ... + 575078.

Almost surely, 2^9201128 is an apocalyptic number.

It is an amenable number.

9201128 is a deficient number, since it is larger than the sum of its proper divisors (8051002).

9201128 is a wasteful number, since it uses less digits than its factorization.

9201128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150147 (or 1150143 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 9201128 is about 3033.3361172148. The cubic root of 9201128 is about 209.5464740077.

Subtracting from 9201128 its reverse (8211029), we obtain a palindrome (990099).

It can be divided in two parts, 920 and 1128, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 9201128 in words is "nine million, two hundred one thousand, one hundred twenty-eight".