28932961 has 2 divisors, whose sum is σ = 28932962. Its totient is φ = 28932960.

The previous prime is 28932947. The next prime is 28932973. The reversal of 28932961 is 16923982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26625600 + 2307361 = 5160^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 28932961 - 2¹⁷ = 28801889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28932901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14466480 + 14466481.

It is an arithmetic number, because the mean of its divisors is an integer number (14466481).

Almost surely, 2^28932961 is an apocalyptic number.

It is an amenable number.

28932961 is a deficient number, since it is larger than the sum of its proper divisors (1).

28932961 is an equidigital number, since it uses as much as digits as its factorization.

28932961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 28932961 is about 5378.9367908537. The cubic root of 28932961 is about 306.9947584756.

The spelling of 28932961 in words is "twenty-eight million, nine hundred thirty-two thousand, nine hundred sixty-one".