28932161 has 2 divisors, whose sum is σ = 28932162. Its totient is φ = 28932160.

The previous prime is 28932151. The next prime is 28932191. The reversal of 28932161 is 16123982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 4330561 = 4960^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 28932161 - 2⁶ = 28932097 is a prime.

It is not a weakly prime, because it can be changed into another prime (28932121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14466080 + 14466081.

It is an arithmetic number, because the mean of its divisors is an integer number (14466081).

Almost surely, 2^28932161 is an apocalyptic number.

It is an amenable number.

28932161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28932161 is an equidigital number, since it uses as much as digits as its factorization.

28932161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 28932161 is about 5378.8624262013. The cubic root of 28932161 is about 306.9919289683.

The spelling of 28932161 in words is "twenty-eight million, nine hundred thirty-two thousand, one hundred sixty-one".